I have exactly the same problem, but mine are 3-3.5 month cycles. Regrowth, then no regrowth plus recession of what I grew, then more regrowrh, more recession. It’s happened over and over for the last 3 and a half years that I’ve used it, and my hair has only gotten thinner and thinner. Also, it’s basically entirely lost its effectiveness now, and only seems to grow these pathetic weak hairs where once I was regrowing dark hairs. You know, it seems that only women have this issue with the cyclical shedding and growth from minoxidil. I spend most of my hair loss research amongst the male forums and none of them have ever had cyclical growth from minoxidil. It must be a female thing... perhaps hormone related. Regardless, it makes me feel a little better than I’m not the only one who has experienced this because I honestly thought I was just a freak.