Husband - Sex - Advice Please

For the past couple of weeks my husband and I have had very limited sex probably once a week I asked him not too long ago why it is that he didn't want to have sex often anymore and it took a while to get out of him but eventually he told me it was because I never come and it makes him feel sad so he would prefer to just not do it then to do it and think I don't enjoy it and make himself upset. what am I supposed to do? I honestly don't feel like it's my fault that I don't come it's just that sometimes I don't but I don't feel like that's a good excuse to just not make love together so what's some tips or advice that you guys have for me whether it's ways to orgasim or what to say to my husband about that. I feel a little upset because to me that is more of a reason to want to have sex but his sex drive is so low. I found some porn on his phone but he said it was just for the sound and he has only watched it once which matches his history but I'm just lost on what to do.