Normal blood sugars in non-diabetics reach 120-140 two hours after a meal, depending on how glucose
is measured. Also keep in mind that BG meters
strips are not perfectly accurate. If you take two measurements just a minute apart, you will usually see a difference of at least a few points, and often more.
Also, at this early stage, you should be at least as worried about low BGs as you are high BGs, especially at night.
I know you want the best for your son.