Postpartum sex

Okay mommas I need advice! I am almost 1 year postpartum and sex is still really painful. Sometimes it’s just at the beginning and sometimes it’s the whole time and it’s almost unbearable. I love my fiancé and absolutely don’t want him to lose interest because he sees that I’m not enjoying it and wants to stop(which has happened a couple of times) we use to have a great sex life and ever since I had my son it’s so hard for me to enjoy. I had 3rd degree tearing and I know it’s definitely still messed up down there from all the stitches and work they had to do to repair. Can anyone give some good advice on things to help me be more comfortable or things I should try? I not only want this for my fiancé but I want this for myself!!