You are going to be very popular around here!If you have to do treatments at home, use a hand towel on top of him and grab behind his head with your thumb on one side and your pointer finger on the other, and cradle his body in the palm of that same hand. The towel protects your hands and arms while giving him something to hold, and gaining control of the head first helps prevent bites. I'm a veterinary technician at an exotic animal vet, and I took home a little girl who they didn't think was going to make it. She needed daily treatments/syringe feeding/eye drops, and as she started feeling better she became a LOT feistier. The technique mentioned above made it so much easier to get in and get out quickly with the least amount of stress to her. If you can, schedule his treatments before his light goes on in the morning and he wakes up, you will have a much easier time because he won't be on the defensive.
My thoughts are with you guys!!