Let me guess... sleep apnea/cardiac?
This scares ME to death. My wife tells me every day I snore loud and stop breathing then resume. This is how my father passed. I started dieting to drop weight and started following breathing protocols (nasal strips at night, breathing exercises, etc) restorative breathing after training etc.
Nasal strips are bullshit...all that is bullshit as far as sleep apnea is concerned. Your air passage close off when your muscles relax because it is smaller than normal.
I am scared. I'm scared to go to sleep at night. I'm down to 225 at 5'7.
You need to be fitted with a CPAP. No if's ands or buts. While body weight is a factor, there are skinny people with Obstructive Apnea.
It's mostly because of of being born with narrow air passages. Have you ever had problems when trying to sound off loudly? Of not being able to shout very loud? As a kid did your dentist have trouble working inside your mouth? As an adult, does your dentist have problems working inside your mouth? Are you troubled with frequent respiratory infections? Do you have a deviated septum? Do you have trouble breathing through your nose? Do you have dental malocclusions? Crooked teeth?
These are all signs of having smaller than normal otolaryngeal "plumbing".
You will hate your CPAP at first try. The key is to get a headpiece that doesn't trigger claustrophobia. I can't deal with masks, i have to use headpieces that connect to the nose without pushing on my face. The first night you are successful with a CPAP will leave you with euphoria. And I am not exaggerating in any way.