That doesn't sound too bad to me. My younger bp hatched on 9/23 and weighed 54 grams. He now weighs 220 grams. So that makes him 9 months old. He eats regularly for me (weekly unless in shed, has refused 2 meals) it just seems like he's not growing as fast as my other ball (hatched 7/8 weighed 78 grams and currently weighs 680 grams). Probably just a difference in metabolism.