I know you offered him fruits/veggies, but did he actually eat them? I find many ill animals will not eat a new food. However, you can offer him fruit/veggie baby foods on a finger that may get him to eat and will help him to take in fluids as well. If that doesn't work, then you should see an exotic veterinarian - you can find one at www.aemv.com.
Hope this helps,
Dr. Karen
Veterinarian
1992 graduate of Cornell University Veterinary School, small mammal interest