My nipples went all sore about two weeks in. Started growing extremely fast about a week after that, which was freaky but also highly positive. I think my skin softened around the same time. My hips started to form about a month in, but I'm not exactly sure since I kind of just took myself by surprised when I saw myself in the mirror and realised that something had happened.
Mental improvement was pretty instant, then about a month in I went all wonky when second puberty hit with full force. It's pretty rough, but I've been pretty positive about it since I know it's taking things to the right direction. The mood swings have been the easier part, the identity crisis and general angst have been the harder part. I'm now over three months in and things are starting to become more stable gradually, although it changes a lot.