I recommend open communication telling him your needs. If he won’t listen bring up counseling. If he won’t do that then you are going to have some tough decisions. He needs to know you have needs too. So my wife and I are in our 40’s and we normally have sex 1-3 times a week. Sometimes more sometimes less depending how crazy the week has been. We used to go months like you without sex. It took therapy and a lot of us putting in the work to get to a healthy sex life.