Thanks Sakura8. Thank you for sharing the formula, math is also not my best subject and I was really worried about dosing it wrong.
He hasn't been moving much but he just tried and has trouble, then his gill started going in and out visably and his body got stuck in a curved shape. He still is pretty much hanging with his head near the surface and body going straight down but has spread his tail fins out more than they were before. He does have a plant to rest on but hasn't gotten near it. I'm afraid that I will stress him out more if I try to move him to the plant.
Would you recommend using a heater while I treat him? I have a Marina C10 that automatically sets at 78 F.
For food, I'm currently giving him Tetra Betta Min Tropical Medley flakes but he is not eating tonight. I'm thinking about switchng back to frozen brine or blood worms. Do you think that will be ok or have any other ideas? I used to also give him Aqueon Betta food pellets but he couldn't get them in his mouth so I switched to flakes and frozen food.
Thank you again for all of your help and advice.