I am a care giver for my mom and her twin sister my aunt and they are 92 years of age. I think the best way i can answer your questions as being a caregiver is to have a stronger connection with him. look him in the face and let him know you love him and appreciate what he is doing for you. he is doing all this out of love so don't break the connection and don't feel guilty because you need his help. it sounds like he is happy to be able to be there for you. feeling guilty makes it harder on you. my mom and aunt do the same thing to me and it frustrates me as i just want them to know i love them and am happy to be there for them and no one needs to feel any quilt. My mom sacrificed to raise me and now its my time to sacrifice for her and i do it lovingly as i know your husband is. It is good for him to have a little of HIS "me time" as i just started to do myself. I also have PTSD so my mom and aunt have to understand that i have my days to. stop saying your sorry and replace it with i love you and appreciate you. everyone likes to HEAR they are appreciated. i will pray for you that things get easier for the both of you.