Welcome, and there is never a bad time to change your life, that is just an excuse, and won´t take the fat off your a@@.

So these next 10 weeks, until your more settled just try to be resonable. Dont eat out or drinkpop, dont eat sugar or sweet things, walk when you can, take stairs....general things. No matter if you are in a tiny room, when there is a will there is a way.
Good luck girl, there is support here 24/7