Will my parakeet get better?

im sorry that you are going through this. But unfortunately the only thing you can do is take him to the vet. Make sure that his food and water and really close to him so that if he does get hungry he wont have to go far to get his food and water. Try to keep him warm. Put a small towel or something like that so he can rest nicely on that. Just try to make sure its not material hes little claws can get stuck in. And keep him in a nice quiet area. I hope that he improves.