Stop worrying about estrogen man. Educate yourself on the benefits and stop believing broscience fairy tales come from the body building world and prep regimes they used to get ready for a show. We are on a 10th of their dose.
IM works for some but subq is better for most. It’s easy to switch between the two. Just do yourself a favor and re educate yourself on estrogen. You have more things to worry about than that.