ok so i have to ask, i just got my guy about two weeksa ago. the guy i got him from had him on fish gravel with only a branch(which was too small) and a water bowl, in a 20 gallon tank. i now have him in a 55gal with a heat lamp, two hides and some aspen bedding. He was only being fed twice a month. Do i need to up it to weekly ?? hes about 4 foot long and about two inches(i guess) in diameter