Just to get clearance from Pulmonologist

Went to my follow-up appt with the pulmonologist about the 2nd sleep study. He is putting me on an Auto-pap. He said he would not clear me until I've been on it for 90 days and I have to follow the 90/70 rule. I have to use it at least 90% of the time and 70% of the time I have to do it for at least 4 hours. This sounds hard. Is it going to be?

You should be getting better sleep and feeling better.

It's doable but will take some adjustments.  I never really got comfortable with the CPAP, but I was completely compliant with the instructions and 3 months post WLS I had lost enough that the pulmonologist had me do another sleep study and I had improved enough to get rid of the machine.  Maybe that will be your case.  If not, I have several friends (not obese) who use the machine and say it has helped their sleep tremendously.