Recently, his glycohemoglobin came back as 9.5. Our lab suggests that below 7 is best. Right now the pediatrician says he is still not under control. It sounds like this is a very stressful time for you. My overall advice would be to work closely with your pediatric diabetes team for help in straightening these issues out.
Air bubbles can take the place of a significant amount of a youngster's insulin.
Work with your team to make sure you are giving an adequate dose of insulin. Make sure your insulin has not spoiled. Open new bottles if you are having problems with ketones and high blood sugars if your son is getting an adequate dose of insulin. Talk to your team about storage of insulin. If you are keeping the insulin at room temperature, then discard the bottle every month.