Do you live near farmland where there is a lot of pesticide use?
This book about frog deformities was really sad to read some years back: https://www.amazon.com/Plague-Frogs-Horrifying-True-Story/dp/0756757541
That's a long time to go without eating. I usually force feed mine if they don't eat after a while. I'd get some Repta Boost. You can powder the crickets with it or give it to them in a liquid form. It comes with a syringe. Just give it to him slowly / a little at a time, since they don't drink liquids.
Gutloading helps, like better quality food is generally superior to lower quality food, but I'd still suggest dusting every other meal with a calcium+d3 supplement or multivitamin that contains useable vitamin A. Herptivite multivitamin contains vitamin A, but it is good for reptiles that eat plants and can process carotene (the source of the vitamin A), but toads and frogs just can't do that all that well, so I'd suggest Repashy Supervite. It's a bit pricey compared to the Herptivite, but it's going to last you all year or until it expires. It contains a vitamin A that is useful to toads, along with a general multivitamin and calcium supplement. You don't want to overdue it, though, since vitamin A is toxic in large, consistent doses.
My feeding schedule for my little goons is Calcium+D3 on Monday, nothing on Wednesday, then SuperVite on Friday. The next week, though, I just do Calcium+D3 on Monday and Friday. Then repeat the first week. It gets them a good boost of vitamins two or three times a month while maintaining their bones and not putting them at any sort of risk of overusing the vitamins. Combo that with your gut loaded crickets and your toads should be quite good.
Piggybacking on this, toads and frogs cannot properly digest vitamin A in a betacarotine form, which is usually what form it takes in multivitamins that can be commonly found in reptile/amphibian sections of pet stores. While these vitamins work well for plant eating reptiles, toads need vitamins that contain a digestible form of vitamin A called retinol, or you need to feed vitamin A rich plants to the feeder insects, who will digest the material and produce more vitamin A inside of their own bodies. I've had two different vets, who raise and breed toads of their own, recommend Repashy Vitamin A+ since it contains retinol. One cannister of it should last you months, if not until it actually expires.
Do be warned, though, that as vitamin A is a fat-soluble vitamin, overdosing on vitamin A is possible, so introducing it to your toad shouldn't be done more than once or twice a week (I'd recommend once).
If it were my toad, I'd give it some repta boost
It gives them calories and vitamins and also stimulates their appetite. It's a powder that you add a little water to to make a soft ball that you put into the toads mouth. I can give you more info on that process if you want to try it.
My toad stopped being able to catch bugs because of a vitamin A deficiency, it got really bad to were she could hardly walk 😭 I think the repta boost saved her life. I've used it multiple times on both my toads when they have stopped eating and they started eating again the same day.
Ooh your setup sounds amazing!! The waterfall I’m using is actually a filter (it’s a Tetra Decorative Reptofilter) but I expect the water to still get pretty gross so I bought an inexpensive mini water vacuum on Amazon so I can suction out the water every week. https://www.amazon.com/Aquarium-Cleaner-Changer-Air-Pressing-Controller/dp/B083NRD2HJ
Oh.. yeah you definitely need to start buying food for them, earthworms, crickets, dubia roaches, and mealworms would all be good for them. I doubt that junebugs are very good for them, and I'd imagine that cockroaches probably arent the cleanest bug to give to your pet. Also whenever you feed your toads you need to dust them with calcium and vitamin D powder or else they are at risk of catching MBD (Metabolic Bone Disease) which you really don't want, This is what I use for my pets and it works pretty good for them, so I'd highly recommend getting that or something similar.
I have a mix of red wigglers (Eisenia fetida) and European red (Eisenia hortensis). Hortensis is a better feeder for adult toads sense its bigger. But fetida can be a great way of feeding small toads huge meals. Toadlets can start in a fairly small container because they're so tiny. I started with a 6qt bin. As mixed sex adults I'd give a minimum 10 gallons per toad. I've got a 18 x 48 which is a little over 10 gallons each (relatively cheap on chewyChewy if you're in the us) But if you've got some really lazy toads, that are all the same sex, I could see getting away with 5gal per individual. I just have a boy that likes to hook onto the girls no matter the time of year. He just bumps into them, or goes to climb over and realize that he's touching a girl lol. I'm not sure about housing a bunch of males together though, because only 2 of mine are male.
i got mine in a 2 pack for $12!!suctions great : DQITJ 2 Pack Frog Habitat Cute Fish Tank Decoration for Toad Frog Tadpole Tree Frog Small Aquatic Animals https://www.amazon.com/dp/B093D6MC8P/ref=cm_sw_r_cp_api_i_EJ488CXSAFD1ENRHD0C1?_encoding=UTF8&psc=1
Most pet stores, online stores like Amazon and eBay
These are the two I buy:
I mix them together and put it on all the hugs I feed my toads. Also, you should keep these in the fridge to extend their potency. Expired vitamins aren't effective.
Fluker's Calcium Reptile Supplement with added Vitamin D3 https://www.amazon.com/dp/B0002DHPEO/ref=cm_sw_r_cp_apan_glt_fabc_CYR5KT5722HZ322HNJQS?psc=1
Zoo Med Reptivite without D3 8oz https://www.amazon.com/dp/B00167S5GM/ref=cm_sw_r_cp_apan_glt_fabc_3K72K7PZ75HKKHYACZSA
The multivitamin is important, because they can get sick from vitamin A deficiency, it happened to one of mine.
He doesn't eat any mealworms because he's too afraid of them and they're too big for him, so he's a dusted fruit fly only guy. The other toads get 1 or 2 small ones a week, but they're still mostly on fruit flies. They all get Herptivite 3-4 days a week and just regular Calcium+D3 the other days. His legs and arms have been fine up until this afternoon, so it just sort of came on out of the blue.
He's breathing is steady, but slower than normal. He's mostly sitting around and hiding under his favorite leaf right now, occasionally doing wobbly wiggling and clicking his mouth. When I moved his leaf, he stood up on his legs like he was trying to fight me or scare me away, so he seems a bit defensive right now. I'll try to post a video soon, but I've been trying to let him relax a little since I think he's stressed from earlier and if he's sick then stressing him seems mean. I know that this is a Budgett's Frog, but Lemon's walk is similar to this. It's awkward, wobbly, and a bit unbalanced.
It sounds like a possible infection. Someone in the Amazon comments used these eye drops on their frog. https://www.amazon.com/Zoo-Med-Repti-Turtle-Ounces/dp/B0002DJ0AQ?th=1 If it were me, I'd send a message to the Zoo Med website to check and see if it is safe to use on your toad. (There's also an Amazon question about using it for a toad.)
I'd also give it a honey bath in case it has some kind of bacteria. It's a cutie. I hope it clear up..
I usually use this calcium and d3 power
I try to feed my crickets and waxworms a good diet before I send them to their doom, but I picked up some of these orange cubes to try out since they seem like they're more complete for the crickets and eventually my toad.
I forgot to add, you can buy some repta boost. It's for sick toads. I used it to get mine eating again, but his aim seemed off, so I started treating him for a vitamin A problem.
https://www.amazon.com/Fluker-Labs-Insectivore-Carnivore-Supplement/dp/B000634CL4/ref=sr_1_1
Let him soak in a honey bath. Some of mine got sick last year, because of contaminated dirt. The only one of the sick ones to survive was the one who sat in the honey for hours a day.
Also, get some Repta Boost. You can give it to him in a liquid form. https://www.amazon.com/Fluker-Labs-Insectivore-Carnivore-Supplement/dp/B000634CL4
I got these little mealworm dishes from amazon and all Toads and Frogs have learned that when the Magic Dish appears, there are GOODIES.
https://smile.amazon.com/DoubleWood-Terrarium-Reptile-Ceramics-Triangular/dp/B085M291YN
The food can't get out... Even crickets seem to stay in!
I think it's a salt generator that makes chlorine from the salt but the water isn't salty. The water isn't salty tasting, is it?
You should get what's known as a frog log. I suggest 2. I keep one on each side of the skimmer so they can get out. https://amazon.com/dp/B08GKHFK45/ref=cm_sw_r_cp_apa_fab_PGSyFbF372DC1