Decent sex advice? (Sorry, longish post)

I don't want rude comments or advice on pleasuring myself (i know how to handle that ;P) but need some good sex advice. Been married to hubby almost 4 years n the first time he made me orgasm was just over a year after we got married when we tried using a vibrator for clit stim during intercourse. Which has worked great ever since! But hubby has always had low sex drive from the start (no medical cause) so we don't have sex often, maybe once a month if im lucky 😔 recently trying to fix this, found out he just doesnt really enjoy sex. He opened up n said he has to focus too hard to prevent climaxing too soon (i know going so long without it doesn't help this and we have used prolonging creams), n he said he is too focused on making sure i feel good. So he said he is too focused to enjoy it. I guess im looking for advice to make sex feel good for me without a vibrator (it distracts him and numbs him i guess) and i want to help make sex easier and more relaxing n enjoyable for him. We aren't into porn, and we aren't that flexible (and i'm 25wks pregnant) so no advice of those sorts please. And he has a really short attention span and little patience so getting him to do much foreplay is a struggle.