Sleep Apnea Treatment

My brother has been prescribed the CPAP and can’t tell much difference in his sleep. He is due to go for a checkup to the sleep clinic and doesn’t want to tell them this because he’s afraid they will make him go through another $1000 worth of sleep tests to adjust settings or something.

So if he can make the CPAP thing work better without having to tell the docs, it will help his health and checking account. Anybody know about this?

Thanks =D