Hi Patti, welcome to the forum. you are in for a rough ride, and we will all try to help you as much as possible. Please be sure and post and read on the FTD and ALS thread in the forum. we have several other caregivers here who face the same challenges as you do and they have a wealth of info for you.
as far as home care goes--yikes. there is no good or easy answer. Mostly, if you have longterm care or disablility insurance you are in good shape, otherwise it has to come out of your own pocket. not a pleasant thing but the truth. Medicare does not pay for it. regular insurance does not pay for it. If he is far enough along for hospice that is some help but not full time or even part time.
perhaps you have a network of friends or family that can h elp. there is a website called caring bridge . org which helps you organize a personal network of help. I have not used it but heard it is really good. you make a callendar and list specific needs, then send a link to everyone you know and they can sign up for it. for instance, you can put on it--visit "john" from 9-2 every day. then maybe diffenent people can sign up to do a day each week which would help you. or you can even put on there need the lawn mowed, the laundry done, grocery shop, fix the leak at the sink, etc.
I think most people here rely on themselves or family until things get really bad because in home care is too expensive for most. It is why we are all exhausted most of the time!
I cared for my husband by myself for 5 years (2 kids at home who help a little too) and iat almost killed me. (No FTD) then he went on Hospice for a year. we had 3 baths a week and a weekly nurse visit. it wasn't much but it really helped. they discharged him last month since he was not progressing fast enough and now I finally broke down and got parttime in home care. Husband loves the woman, she bathes him, feeds him, does a little cleaning in the bedroom and kitchen washes some laundry and cooks a little. I think the FTD really adds an extra hard level to the care you will need to provide, so it is good you are looking at options now.