Find a copy of Oh Crap! Potty Training by Jamie Glowacki read it and implement it with your kid and be chill when it is frustrating as fuck. Since you are in a time crunch I wouldn't wait two weeks between finishing the book and starting training, I might hide the small floor potty while you read and I might get rid of the other seat completely and get something like this https://www.amazon.com/Mayfair-Removable-83SLOWA-000-883SLOWA/dp/B00EPET9RC/ref=sr_1_1_sspa?ie=UTF8&qid=1532635443&sr=8-1-spons&keywords=mayfair+next+step+toilet+seat&psc=1 (whether he truly means it or not those plastic seat ones can be scarý!)
One of the biggest rules with potty training is never ask if they need or want to go. They either have no idea they have to go or they do not want to.
You have to activity do the work to help him learn. He's not going to do it on his own.
I don't normally recommend Oh Crap Potty Training, not because I don't agree with it but because the whole method is just too fast for my liking but you pretty much need as quick as possible at this point.
Just remember to be chill no matter what happens at this point your attitude is vital. If you get upset you might be screwed.
This is the toilet seat that we bought. We got the first one at Home Depot, but one of our toilets is off white instead of white, so we had to order the second one from Amazon because no one seems to carry the off white colors in store.
I know some kids don't like the potty seats because they wiggle a little bit. You might try something like this Mayfair Potty Training Seat.
It's basically a regular toilet seat that has another part that comes down to turn it into a toddler seat. Makes it seem like a more adult seat, and is a lot more secure.
I just got these OP. They're a goddamned lifesaver.
Can be operated without looking, since everything just falls into place nicely. Hell, I got it 3 days ago, and my daughter has now started to climb onto it herself to do her business.
Late to the party but we like this seat. It is an adult seat with a kids seat built in.
https://www.amazon.com/Mayfair-NextStep-83SLOWA-000-883SLOWA/dp/B00EPET9RC
I recommend one of these. It also helps prevent pee messes as it helps the child sit correctly. And no potty seat removal when parents need to go. https://www.amazon.com/dp/B00EPET9RC/ref=cm_sw_r_cp_apa_5kRezbECWAE2G