With my 8 month Olds vet cost

Hi, my name is Jason. My baby boy got into a zippered bag and ate a bunch of advils which reeked havoc on his system. His liver and kidneys were hit hard. His liver recovered but his kidneys are in bad shape. He's doing so so. But his bills are climbing. It's been 2 weeks and with the meds and boarding I can't go this far in debt much longer. The vet said I would have to make the decision which I don't want to do. He's only 8 months old and hasn't started his life yet. He does have hope, he's young and strong