guys don't argue or be rude to other, it just gets tiresome :\
sushiroll was looking for HELP not for an argument!
@sushi
try more frequent water changes, if your tank\bowl is glass possibly try getting a mini-heater. I would do water changes 1 or 2 times weekly, and remeber, a thermometer is an essential with heaters, especially in small tanks that can easily overheat.
good luck, I hope your betta pulls through. Compared to what I've seen, it's a decent size.