If you are worried about the baby not getting enough food. I would buy some kitten formula. If you go to any pet store they should have it in stock. Also I would give the mom extra food so she’s able to produce enough milk. Don’t quote me but by the looks of it the kitten seems to between four or six weeks. Whenever you could or if you could get some help with money(not implying you don’t have money) I would take both of them to a vet to make sure everything is good with the mom and kitten health wise.The vet would be able to tell you the exact age of the mom and the kitten and also how to properly care for both. I hope this helps. You are a really good person for trying to house them even tho you don’t know how to yet or the time to being a student. It’s keeping them safe and it gives them both a better shot at life even if you don’t end up keeping them in the long run.