Toddler OSA

knottie83878590c7c4711f

My 2 year old has Obstructive sleep apnea due to enlarged adenoids. He rarely sleeps more than 9 hours a day. (I know waay less than he should) he also has some pretty extreme behaviors especially when his sleep is more interrupted than usual.

So question. 

He is now getting over a cold. It's 6pm and he fell asleep at 4pm.....do I wake him? Will he sleep through the night? 

I've tried to gently wake him multiple times and he just falls right back asleep. My heart wants to just let him sleep it out, but I also don't want to risk being up all night since I work in the morning.