Hi again, if you saw my previous thread here  then you would know that my boy's weight has been fluctuating and he's been very lethargic and not wanting to play. Another thing I've noticed is that he drinks a LOT. I'm not complaining, because naturally, water is good for the body. But he'll drink for 15 minutes at a time. Could that be a sign of insulinoma? sorry for all the posts, I just really am curious as to if you guys think this is abnormal. 
Also, once again, yes I am working on trying to get my boy to the vet soon.