I would use an AI like Erase. It is only going to help. Stinging Nettle may increase estrogen the same way it raises testosterone. Both estrogen and testosterone bind to SHBG. So by loweing SHBG or blocking its ability to bind, both testosterone and estrogen can increase.
I have also seen users noticing increased estrogen feelings while on products with the extract, although not common.
But as I said before, taking an AI would only help. 1-2 caps of Erase per day would suffice and would last a long time.