Can't take the stress

My husbands dad is coming for a visit for a month a week after my due date, the problem is he's high maintenance, and I spoke to my husband about it and he just shrugged it off,I can't just have a baby and run after my 2 yr old, then get up at midnight to feed my newborn, then look after his dad all day,as in cook breakfast,lunch,and dinner, clean and entertain him while my husband is at work.ill go crazy. It's already causing a friction between us because I am not going to do it, I will need all the help I can get myself😒, but I don't know how to make him understand cause he thinks I don't like his dad.