To add on to bigmanfootball67, look for the P5P version of B6, 50-200mg per day in divided doses. If you can’t find that version and take regular B6, take 300-1000mg per day divided, but make sure it is pyridoxine hydrochloride, as pyridoxal hydrochloride (another cheaper version) has no effect on prolactin.
Add to that Vit E (300-400IU per day), and SamE (400-1200mg per day). These three have been proven in multiple studies to lower prolactin, so the three of them together should pack a decent punch. Caveat: I used these as my primary anti-prolactin while using tren in the past, and still had side effects similar to what you describe. Since you are post-cycle, they should work much better for you than they did for me during cycle.
After my tren experience (multiple short cycles, 2 weeks on followed by 3-4 off, then repeated), I had residual side effects for a few months before everything got back to normal. Forget how long it took (sorry), but it did come back. At two months, especially after one injection, you should be at the point of seeing steady improvement. I am not a doctor of any type, just my opinion so take that for what it is worth and go from there.
Like someone said above, at this point it could be mental more than anything. And if you have had this much issue following one injection, I wouldn’t use tren again without some caber on hand (if ever - unless you enjoy pushing rope). I don’t intend to ever use it again, personally. Didn’t care for the sides, and there are plenty of other compounds to play with that are less harsh.