You can't dictate child support in your prenup

My (29M) prenup with my fiance (28W) pays her for having children. My parents (65M, 62W) are telling me to call off the wedding — **EDIT 2: It's occurred to me that I don't know how to close a post. Really I just wanted to hear what other married/engaged folks were doing. Thanks the advice for those who gave it.** **EDIT: Real…