Sex Q’s

So me and my husband have been together for going on six years and married going on 3 years. We’re both 21. My questions are 1. How can I help him to last longer while doing the nasty? Are there any products or something cause I’m at a loss. And question 2. Any recommendations to help him go more than 1 round. I of course don’t want to embarrass him. I would also like recommendations on how to spice up our sex. Any and all recommendations are thanked in advance!