Saw that post about transmascs and how ppl need to talk more about vaginal atrophy and how it's easily treatable with estrogen cream without affecting your HRT and it got me thinking about how none of us transfems seem to talk about dick atrophy either and how it's also easily treatable with topical testosterone cream provided you're not taking a T blocker (so on a GnRH agonist, estradiol monotherapy, or have had bottom surgery). Without T you don't get that passive tissue maintenance so unless you want to get hard every other day for the rest of your life to keep it healthy you're kinda screwed and erections can become really painful, let alone the change in length/shape. So yeah ask about topical testosterone.

daily sildenafil and tadalafil are also good options afaik. working well for me anyway tho idk exactly what the effect on total T levels are. tho it should be noted that topical cream does actually affect your levels a bit, it's just far lower dose than your actual primary HRT so it doesn't necessarily like ruin the effects or raise your E/T levels enough to be an issue. prob a good idea to get your levels checked after using any of these options for at least a month to make sure your levels are all still in target range and make adjustments as necessary. also goes without saying but please masturbate a lot regardless of whether or not you are using these options, it's good for you and will help prevent atrophy to a degree all by itself!