Prolactin is one stubborn sonofabitch. Once raised, in most cases it stays raised and there's nothing you can do to normalize it naturally, par using medications.
In my case the switch to abilify lowered my prolactin from ~1060 to about ~62. After that I was able to get high off weed again. Man I was blown away when I got high, I kept telling my friend that I couldn't believe I was high and that I never thought I'd see the day I was ever able to get high again.
I haven't tried kratom again yet, unfortunately in my country it's easier to score H than it is to buy kratom...