Birth Control between FET

I’m preparing for my second FET after my first failed. My clinic is putting me back on birth control to control timing of the next FET. I really don’t want to go back on birth control. It makes me feel like crap and I want to give my body a break from artificial hormones. Can’t I just let my natural cycle do its thing since it’s usually very regular? Especially since I’m not in a huge rush to do this again? Is this normal or have you had a similar experience with your clinic? Any pros/cons you can provide?