It took me 3 weeks to notice a slowdown in body hair regrowth, literally, by a total of (drumroll!) 9 hours. That's right. I know how many hours it took for my hair to grow. OCD much? Yes.
My skin dried out around 4 weeks.
I got increased nipple sensitivity 6 weeks in, that comes and goes.
It takes time to notice things, unless you're highly dysphoric and hyper aware of body things.