Originally Posted by Samirose
Also don't be worried about changes so much once a week would be good. The fish just might be a little stressed. The betta can breath air like humans if water gets to bad or they just feel like it.
It's not when the water gets bad or they feel like it. The way their gills are formed, they can't get enough oxygen, so they breathe from the surface as well to make up for it.
To the op, keep doing your water changes like you were after he gets better, and once a day while he's getting better. Once you have a cycled five gallon you can switch to once a week.