Taking a break from IUI or not?

First <a href="https://glowing.com/glow-fertility-program">IUI</a> failed so now on to the second one. I wonder if it is better to do <a href="https://glowing.com/glow-fertility-program">IUI</a> consecutively for every cycle or take a break inbetween. I heard that one of the side effects of clomid is to make the uterus lining thin. I have much lighter period this time so I guess that’s the clomid effect. Taking a break would be more helpful? Or is it better to do consecutively? I’m 41 yrs old so I don’t have much time to waste though.