That is great. Make sure you have some baby gas medicine (active ingredient simethicone) on hand, a rice sock (sock filled with dry rice that you can heat in the microwave), and syringes for water or simethicone. He should eat until 1-2 hours before the surgery, and you should get pain medicine to take home for him. After he comes out of anesthesia, keep an eye on him until he's eating, drinking, pooing, and peeing. This should be within a few hours. You can give him the rice sock for comfort, and/or ice the area 2-3 times a day 10 min at a time with ice wrapped in a towel. When you do this, check the incisions to see that they're normal, not red or puffy, and he's not bugging with them. You'll want to keep him inside if you can for a while before and after the neuter.