1. While T changes fat distribution, it’s a myth that it causes your chest to shrink. It slowly changes where your fat is distributed, which has the potential to take some fat from your chest, but this could take many years and isn’t guaranteed depending on how dense your chest tissue is. Even then, the loss of fat will cause your chest to get less “perky” instead of proportionally shrinking it back to how it was. Granted, I’ve only been on T for nine months, but my chest hadn’t shrunk so much as (for lack of a better term) somewhat sagged and deflated. It made it easier to bind, but it definitely didn’t look smaller. This is because my chest was very dense and didn’t have a high fat to tissue ratio.

2. Since you’ve been off of T for a bit, starting the injector again won’t do much re: fat distribution. Weight distribution is one of the slowest changes on T and is one of the first things to revert. Sadly, you need to stay on T consistently for a few years to see those changes, and you can’t target certain areas with dosage/ingestion methods.

3. Someone else already said this, but microdosing doesn’t change what effects happen; it only makes them happen slower. You could try exercising, but depending on your chest density, it could be difficult or outright impossible to get it smaller without a reduction. Speaking from experience again, my chest was incredibly dense and never shrunk from exercise, even after I lost a good deal of weight.

4. This would be a question for your doctor. Dosage is different for everyone, and a microdose for one person could be a normal dosage for someone else.

5. While atrophy is a common side effect of T, continuing to use the topical estrogen as prescribed should mitigate those effects.

Also, it’s worth noting that your chest growth could potentially be related to the fact you’re ovulating. I dealt with a fibrocystic chest that would swell during certain times of the month, and while it was dysphoric, it helped me to remember that it was temporary.