Hey Jeff,
I think going off porn and masturbation for a while would be a good call. If you do it too much, especially if you use porn, what actually manages to get you off becomes very specific and narrow after a while. So I think giving that up for a while will make you more responsive.
Have you tried communicating with your partner about how you like it? Have you tried letting her tease you a bit first? Trust me dude, when you let them tease it can really drive you wild