Rescheduled...again

For the fourth time, I have been forced to reschedule my engagement photos. It’s been either rainy, cloudy, flooding where we want to take photos or all of thee above. I have always wanted to have our photos taken at a local park with a small waterfall. But I am starting to feel like I am going to have to sacrifice my want because taking outdoor photos has been impossible. My fiancé has suggested getting a new photographjer, because ours is in demand and can only book us anywhere from three weeks to a month out. But the time we find a new photographer we could have taken others with our one now. I’m stuck as to what to do, and I’m frustrated because this ridiculous. Has anyone been through this before or have any suggestions?