Long term use of local E2/T cream is safe, and if it keeps you pain free, I would keep it up.
Some women just have more sensitive vestibules than others, and they need more support.
Also, pelvic floor dysfunction, especially high tone of the pelvic floor, cause a decrease in blood flow to that area, which make it more susceptible to pain, and tearing.
Pregnancy increases hormone production greatly, so you might find that when you get pregnant, you don’t need the extra hormones any more.
As for something natural, you can try coconut oil, but I’m not sure that will be as effective, but you can for sure try.