I would give him 1 a month and no more than 1 every 3 weeks. I was giving my C. Cranwelli Grif 2 a week to help him gain weight, but he was sick for 3 months and I had to force feed him to help him recover because he stopped eating on his own. I did it for 4 weeks. I would feed your guy more than 1 a month if he's healthy and is at a healthy weight.