His memory is getting worse.
He repeats things constantly, not so much questions but stories.
He is losing things like house keys and money belt frequently in.his home.
He doesn't eat much because of having a lot of stomach operations over the years and he doesn't really like hospitals.
Cognitive impairment where he doesn't trust and is suspicious of family members.
Makes up stories/ lies.
Full neuro-psych exam will show up what areas Dad is having trouble with. That will be the best way forward IMO. To plan what specific help he will need.
Dementia is progressive but I would want to know what type (if possible) to plan best for the future. Some have rapid decline over 2-4 yrs but Alzheimer's can be 4-8 years - even up to 20.
Providing care for Dad could be the most rewarding thing in your life or... not. It will be tremendously challenging.
My other advice is keep reassessing your plan. Keep talking to your DH. Is the plan still working for ALL of you?
Your father has some situations that may or may not contributing to his mental status.
Hearing loss, vision loss, depression, his stomach problems, all may be impacting on his overall functioning.
If you have access to a geriatric specialist, have him evaluated. Unless you (or your father) have been specifically told by someone with training in geriatric assessment, don’t assume that his forgetfulness and repetition are stages of dementia.
If you are determined to bring your father into your home, do you have his POA? Has a POA been granted to anyone? IF THIS HASN’T BEEN DONE, BE SURE THIS IS DONE ASAP.
Also, please keep doing your research into care and support for elderly Loved Ones. Read up on all you can about his issues INCLUDING at least a check on websites of local residential care centers for the elderly, so that you have at least some sense of alternative ways of meeting his needs as they increase.
Be sure that you and your husband have provided for relief time for EACH of you and both of you together, before your father arrives. Try to be as realistic as possible if (when) his care needs exceed your ability to provide his 24/7 care. Base your decision making on facts. You are obviously deeply devoted to him, but keep in mind your welfare and that of your husband too.
MUST have enduring POA & HPOA before moving in.
Taking on the care without the authority is a rookie mistake. It is the road to h477.