Bmo & Marshall Lee hospital care

Hi, My boys are from off the street babies. I bottle fed them along with the help of a lot of people. They were found, side of the road at like 2 weeks old. No mother in sight, so assumed dropped off. They’re really survivors, and they also very dumb. They got into rat poison and ate it. I got them to the emergency vet, but the next step for them is hospitalization which I cannot afford. I’m a student renting an apartment with limited time. I don’t want them to lose their battle because they fought really hard to be here and their one mistake shouldn’t be punished with death. Please anything you can do to help would be so loved and appreciated. These guys are just dummies who need more time.