How do I bring it back?? 😦

Ever since I've been sexually active I never had an issue with getting aroused and wet. It was to the point I was almost always wet and ready to go at it. Then a couple years ago after being on birth control I noticed I wasn't lubricating like I used to. I was always worried as to why it was happening. Then I found out I had PCOS and I began questioning if that was the reason. My gyno keeps telling me to just use lube and doesn't give me any explanation as to why I'm suddenly dealing with this. She hasn't even given me any methods I could try to bring it back. Has anyone else had this issue?? What can I try to bring it back?? I have a high sex drive. I'm always wanting sex and I can't stand having to keep rubbing on lube just before sex. Sometimes I just want to go at it instantly but it takes forever to get it in without some form of lubricant half the time.