Clear your stuffy nose first.
Since you’ll automatically start breathing through your mouth if your nose is blocked, you need to make sure you go to bed with a clean nose. You can try a hot shower, saline sprays, and neti pots while getting ready for your snooze time.
Also, staying hydrated during the day and using a humidifier will help you prevent clogging.
Don’t sleep on your back.
Although sleeping on your back is suggested for skin beauty and lower back problems, you shouldn’t try to sleep in this position if you’re likely to have sleep apnea. Because when you go into a deep state of sleep, the muscles in the roof of your mouth, your tongue, and throat relax and block the airway, vibrating the tissue.