Enjoy! Wait for the boob pain whenever they bump something, because it's coming. A padded bra will soon be your friend

I'm at two years on full HRT, and the initial buds and pain arrived a month or two after starting HRT. The two sides have always been a bit asymmetrical, with the left bigger than the right by about half a cup size. I am now a small A cup. I don't feel buds any longer, and my breasts just feel like maybe they are a bit denser/heavier than the surrounding tissue. Idk. I like them

The funny thing is that I still go about a month or two with no pain, and then they get really super sensitive -- even though my HRT is pretty stable at this point, and has been for over a year. I married a wonderful woman a few years after I came out and began my transition, and I love being intimate with her, but there are times where they get so sensitive I need to redirect her affection elsewhere or it brings tears to my eyes. For real.
Hopefully, that is not TMI, but to say....have fun with your second puberty! YMMV, but I think what you are experiencing will probably last a couple of years.