Can’t get used to his dick 😫

I don’t know what’s wrong with me. I feel like I can’t please my boyfriend. We’ve been together for 9 months and just moved in together.

I was previously with my ex for five years and knew just how to please him and what worked for him.

Now I feel like I just can’t get used to my new boyfriends dick, I feel like it sounds ridiculous but I just can’t! He’s not as big and his foreskin doesn’t go back (like the head doesn’t come out) and I don’t know if that’s it or what. I feel awful not feeling like I can please him

I love him to bits and don’t want this to affect our relationship but I know he’s been with a lot of people (40+) in his past so it’s a big thing for him