What will happen?

My 75 year old father has cognitive decline after an ischemic stroke 4 months ago.

He refuses to bathe. He refuses to brush his teeth. He truly believes he’s still smoking cigarettes (he’s definitely not). He eats mainly processed foods, many sweets (including sodas), no vegetables, some fruit.

He has a blood clot on an eye vessel which is pretty big accordingly to his ophthalmologist.

Worst of all, he is refusing his medication. He is on multiple blood pressure medications, blood thinners and such. He has coronary artery disease, hypertension, chronic obstructive pulmonary disease, nearly pre-diabetic, has had 2 heart attacks, an aortic aneurysm that was repaired about 6 years ago and refused his follow-ups.

my question is, how likely is death considering his health issues, lack of care and no medication? I’m his full time caregiver, I spoke to his doctor who then gave him a lecture about the importance of medication and all, but it seems to be pointless.

he is confused everyday, so I don’t know if that’s the reason.

should I expect the worst or is he still ok?

thank you.