This is the age where most dogs shed their puppy fur , which will get better! It's not a great indicator for their adult fur. That being said, I think there's not too much more you can do other than what you're already doing.
We add fur zappers to our washing machine and it definitely helps a lot with the hair. I'm sure there are other bands or similar products that are cheaper if that's something you'd like to try out. I find the shedding much more manageable in adult dogs, outside of the coat change twice a year there's really not that much hair.
I have the same one from a different brand: https://www.amazon.com/dp/B00BAGTNAQ/ref=cm_sw_r_cp_apa_glt_fabc_845MWAA9D002QDSYSJEK?_encoding=UTF8&psc=1
My sister recommended it for my 2 cats and dog and I'll say it works incredibly well.