Conflicting circumstances

I’m trying not to masturbate as much as I feel like the build up of sexual energy and urges help me get harder when it comes time to have sex with my girlfriend. However, I’ve started to notice that if I go on from abstaining too long, I finish too quickly. My girlfriend tells me to masturbate more so that it doesn’t happen but really I don’t see a problem since when we have sex it’s usually for multiple rounds and once I get that first one out the way I hit my stride the second time around. So fellas, any advice here?

Maybe you should find like a good middle ground? Like masturbate a bit more often but not so much that you completely lose your drive or cum too early