Omg, my ex-husband was the most lazy, selfish lover in the world. Mounted me, did his thing in under two minutes and was done.
Be happy your husband cares enough about your needs. Some of us are not blessed with that.
I would talk to him and let him know how you feel. Let him know it pressures you. I think he will understand to back down when you let him know.
Maybe you two can come up with a plan that can signal to him without speaking that tells him you are not in the mood to try for an orgasm that night. Maybe a simple tap on his shoulder could be a gentle way for signaling to him that you are ready to shift the focus on other things.
I hope this helps.