sex on one year of hrt

hey!!

desperately needing some help with sex - also to just write out my thoughts.

ive been on hrt for a bit over one year now. i obviously know use it or loose it, but frankly due to such a low sex drive only have really been masturbating once a week (I know not enough lol). about two months ago, I finally got prescribed some low dose topical testosterone cream that I use only on the penis about x1 a day/every other day. that has helped a fair amount with sex drive (also started progesterone around the same time so that may be part of it) and I can finally get a full erection while still keeping the sensitivity/better orgasms and not raising my t levels at all.

the problem is, it's shrunk from 6 inches to around 4 or a little under.

i used to have a fair amount of casual sex before hrt, where I was okay using it (as long as not on top and whatever lol) but now that it's so small I don't know what to do.

I've never tried any sort of butt stuff on myself, and it's just hard as if im going to have a penis I would at least like it to be working and a solid size lol

i know this was rambly, just really don't know where to go from here.