I read it takes up to 6 months to one year .. I guess it depends individually. I’m taking loads of hair vitamins, biotin ,vitamin B/D/E/C , and others . Seems it doesn’t stop it but I can see baby hair regrowing which is optimistic
I started washing my hair with Mielle Rosemary mint shampoo and I started seeing the hair regrowth within a month I am currently 10 month pp hope this can help you too
If you aren’t already take strong collagen tablets and get postnatal vitamins from pregnacare