If the foreskin has not been rolled over backwards all the way to the base of the glans, it should not reduce the pleasure on the female. The friction may be reduced a little but the overall size should not be impacted on an erect penis. Ask your husband to dip his organ on lukewarm water and slowly roll the foreskin back till the base of the glans. It should be a very easy process. Once it is rolled over a little bit, then regular intercourse will help it come out naturally. The problem may be the size of the penis. The average penis size on Nepalis is less than 5 inches so if he suffers from that then maybe he can try orally satisfying you in the beginning and only penetrate later on when you are fully aroused.