My hamster has wet tail. Is he too far gone to save him?

My hamster Loki (less than a year old) contracted wet tail about a week ago. I put him on orange-flavored Wet-Tail Plus antibiotic tablets, but I am very afraid that these will not work, so if anyone has ever used these tablets to treat their hamster before, I would appreciate feedback about the tablets. They disintegrate in Loki's water, but I have read that hamsters with wet tail can weaken over time to the point where they cannot eat or drink. I've been so worried about this that I may be stressing Loki out even more than he already is by trying to give him food and water by hand to be sure that he gets it. He has lost some weight but still shows enough energy to get up and take care of himself when I wake him up, and even go a couple of turns on his wheel. His bottom is very dirty and he still tries grooming himself, and his eyes are open as well, although he wobbles a lot when he walks and sleeps for a very long time. I just don't know what to do; I have one remaining tablet that is supposed to alleviate stress, which I will give Loki tomorrow. I have given him oats and removed seeds from his diet. If there is any advice you can offer me at all, I would be very very happy to get it. He is one of the sweetest hamsters I have ever had, yet my parents do not want to go to a vet because of the high prices.