There are web sites that take you step by step with orphaned cats which you may have if it is tiny. A two month old cat would weigh over two pounds. You really need to get some instruction. Litter training is very simple which tells me that this cat has not had any care or it may be sick. My wife and I got a two week old cat recently and it required constant care like feeding every two hours with substitute cat milk which is $4 a can and they drink that much in a day. They usually don't eat solid food until a month old. They also need to be stimulated before they can pee or have a bowel movement.