Thanks to Pugsy's suggestion to increase the EPR, the swallowing of air decreased dramatically and I was able to increase the pressure until it didn't reach the max during the night! It seems like I found the correct pressure last night:
Sadly, it didn't seem to do much for the FLs, so I will move on to the Afrin and see if it changes anything.
I am still having problems with nasal passage dryness and I had to take a break in the middle because it felt like it was kind of burning and uncomfortable. I did purchase the saline mist and I am using it in the morning and before bed. Should I use it in the middle of the night if I wake up with the sensation again?
I could also try to increase the humidity again, but it's almost at the max and I'm worried I'll start getting condensation and water up my nose instead. I guess I could just give it a try and see for myself
Anyway, I just thought I would give a little update. Thank you SO MUCH Pugsy for suggesting the increase in EPR! I can't believe that's all I needed to help with the aerophagia!