I am a caregiver for seniors in their homes. We do personal care and home helper care, which it sounds like your father needs.
Being in the home, (we would also note down in our journal that we provide for our clients) and be aware of any changes your father might be going thru.
We can go in weekly, daily, etc. Our office can do anywhere from two, three or four hours shifts. This could be one day a week or every other week, (as I do for one client), but it sounds like your father needs weekly help.
Also, it might not only be his clothes, but his own personal hygiene that is lacklng.
I know here in Berks County, PA, we have over 30 some agencies that do this type of work.
This might be something you should look into because of our background and monitoring, we would be better than just a housekeeper who would not be trained to look out for certain things or behaviors.
As a home helper, I clean bathrooms, toilets, sinks, tub and floors, same for kitchen, take out trash, vacuum, dust, organize if needed, laundry and also help prepare meals. We can also take the client grocery shopping or do the shopping for him with a list provided. We can take clients to appointments. Personal care, which is a higher fee would involved bathing client or anything involving clients body, (checking wounds, applying creams, bandages, changing depends, etc.).