man i dont have much info for you on this one the last time i saw a betta, it was in my buddies tank in atlanta, that dude got huge, but then thinking back i never really saw him come out much unless it was time to eat. but 2 weeks, he may still be getting used to being in a new environment, how does he look? healthy? eating? anything in your tank that may be bullying him? im just trying to get an idea of the situation