So, this Rhasputin character knows his rats. That's wonderful, and I'm sure rat keepers are glad to have him/her as a resource.
Rhasputin does not, however, know his/her varanids. He/she has one, and it's been telling him/her for five years that things are not right - and nothing is done to make things right. I have only seen references to the terrible setup offered, nothing about temps/diet/humidity.
My guesses are:
1. It's too cold. It doesn't have access to the proper temperatures to make it want to be a sav. So it lays around waiting to warm up properly.
2. It's fed an improper diet. I recall roaches being mentioned, which are great, but nothing else regarding variety/frequency.
3. It's small. This is just reinforcement to my first two guesses.
Rhasputin - Your monitor is not happy. It is dying a slow, agonizing death. It needs heat, proper diet and husbandry. You say there is no way in your current circumstances that you can construct a proper enclosure. You better remedy that pretty darn quick. You say you have a new job. Don't they pay you? I go and buy reptile food the day after payday BEFORE I go grocery shopping for myself.
Chris