
Elderly smokers seem to sleep a lot more. I am thinking smoking seems to help bring them back around. My dad passed away at home in the middle of the night (51 years ago) smoking Lucky Strikes. I always wanted to change the plan, but Nicorette's are not as tasty as to others. I want to give my husband a better chance, and not an autopsy. I realize from his dad, that there will have to be a continual fire watch if oxygen is around.
Maybe you should consider placing your husband. Check out VA homes and see if he qualifies. Next time he is in the hospital claim unsafe discharge. No one able to care for him.
https://www.agingcare.com/questions/my-73-yr-old-husband-is-a-smoker-who-will-not-wear-mens-depends-and-is-a-fall-risk-any-advice-497843.htm
Since smoking wrecks your pulmonary and circulatory systems, he may sleep a lot more because he's not getting enough oxygen. Does he see a pulmonologist? Has be been diagnosed with COPD? If the answers to those are "no", then this is where he needs to start.
In your prior post you said your husband is 73 yrs old. Let's assume he's been smoking since late teens, therefore about 60-ish years. My friend, a retired pulmonary therapist, says if you quit by 30 you can recover your lungs. Anything after that... there's no "better chance" to have an impact on the damage done. It's already affected his heart (per your other post). It's apparent his lungs are now compromised.
More information would be helpful, like if he sees a specialist and has a diagnosis.
Nicorette gum is not the only way to quit smoking or get a nicotine hit. I used nicotine lozenges in cinnamon flavor sold at Walgreens in various strengths.