Very weak rat! Refuses to eat and drink! Life or Death!

Question
Hello my name is Dee.

I have 2 rats, Rascal and Yoshi. We got them when they were a few months old. When they were about a year old they got really fat. They have both lost a lot of weight since then thanks to a good nutrition. Later, Yoshi had reddish discharge coming from his eyes. We ignored it for about a month and a half then we noticed his teeth were really long and he was weak so we took him to the vet. While we were there we got their teeth cut and got them checked up. Yoshi had kidney problems because he wasnt drinking enough water. Now he is at home, and hopelessly weak. He is 0.6 pounds and they both are 1.5 years old. Please help. He wont eat at all and only drinks a few drops! I dont want to lose him!

P.s.
-They are fancy rats
-Only eat human foods (spaghetti, mixed veggies, oats, etc)
-Both 1.5 years old
-Rascal weighs 1.4 and Yoshi is 0.6 lbs

Rascal, Yoshi, and I thank you


Answer
This is going to be a vet issue. I cannot give any advice for him since he wont eat. Before you do loose him to malnutrition you need to go to the vet. He can determine what is causing him to not eat. I am sorry that I cannot help you, but please take him back to the vet.

Thank you for using all experts and I hope things get better for Yoshi.