Both boys were/are EBF, no formula or food yet for DS2 yet, I got my cycles back at 8 months with DS1 exactly 2 weeks after I stopped BF during the day. I'm only 4 months pp and I'm started to get symptoms of a returning cycle, I had the copper coil both times, only difference is DS2 is not as much of a booby monster as DS1 so we can go more than 4 hours of feeding (not my choice!)