P5P can be used to bring down prolactin a little if you want to continue with the SSRI. It is kinda self limiting in its impact to prolactin, so crashing prolactin isn’t much of a concern compared to drugs like caber. It’s also over the counter.
Prolactin becomes elevated after sex and is why you lose erections temporarily (refractory period), excess prolactin interferes with secretion of gonadotropin releasing hormone, resulting in decreased testosterone and erectile dysfunction.
The SSRI is causing the high prolactin and are known to do so.
You don’t have low-T, you have robust Total T and Free T levels.
Why are you even considering TRT in the first place?