Managing my husband with Parkinson’s and dementia

I am just so frustrated with trying to figure out what my husband with Parkinson’s and dementia needs. He has communication and word finding issues so even if he tries to tell me, it doesn’t come out right. He doesn’t follow my directions. I use simple sentences and repeat over and over but he doesn’t act on the instructions. He just freezes and stares. I think it is time to have someone come into the house to help with him but I just don’t know why I feel so resistant to that.