Also if he is stubborn and refuses to continue with treatment. Discuss the surgical options instead. A tonsillectomy and adenoidectomy as an adult is worse than an emergency C-section with an ineffective epidural.

Then top it off with a side of UPPP. These are not pleasant.. but in the end it normally helps most snoring tonsil obstructed apneas.
It help drop me to mild from severe sleep apnea. My snoring went away as well. My ENT told me most snoring is a result of enlarged tonsils.

Just a thought. I am hoping that he settles in with his CPAP. Also look into sleep apnea monitors for your crib. Sleep apnea tends to run in families and your child may have it. Mine did. He was stopping breathing over 30 times a minute. How scary is that? Much scarier than my own 60x. Why? It was my baby. Well at the age of 4 he was officially diagnosed and got his own CPAP. He is 5 and 2 months now. He sleeps 12 hours a day on his CPAP. You might let your husband know there is a five year old out there that uses his CPAP with out fail. Only the rotavirus caused him to spend a night or two with out it.
MG