Doctor wants me to take a break

I called my fertility clinic this morning to let them know I’d started my cycle over the weekend and that I was ready to start round 3 for <a href="https://glowing.com/glow-fertility-program">IUI</a>. The nurse called back and said the doctor left a note in my chart to take a month off before starting another cycle and that it was a standard procedure. Has this happened to anybody else?