Yes, I will be getting him checked as soon as possible. I don't want this to go unnoticed & thus, unchecked by the doctor(s). In the meantime, I feel very confident to at least keep an eye on him (BG wise, won't babysit him on everything else) and help him when & where possible.
In terms of BGs, I was a little surprised to find his blood sugar elevated AFTER we went skating, as he did not eat anything & was only exercising.

Here are the BGs & the notes I took:
Last night:
9:30 PM = 148 (while skating - skating ends at 10:30 PM)
11:00 PM = 220 (after skating)
This morning:
5:20 AM = 157 (woke up to use restroom, had him check)
8:30 AM = 145 (still fasting, nothing eaten since 11:30 PM)
11:15 AM = 132 (just started eating a bowl of cereal)
Thank you all for your input & for the help you've given here.