[ronaldlimwt]

Following are the few suggestions:
1. Learn from video about pre intercourse.
2. When he is about to come ask him to stop penetrating.
3. Do more often.
4, Can some herbal medication that can slow the process.
5. Can him to relax and don't do when he is in a hurry such as going to eake up for work.

All these will take time and your encouragement, participation and understanding.

Wish you success in your relationship.