My Endocrinologist went straight to the recommended high doses, since I wanted to fully transition.
If you just want a low dose to partially relieve the dysphoria, then there is nothing wrong with that. Just keep in mind that we all respond to HRT differently. Some of us have a great response and others not so much to any dose. Most all of us feminize with constant exposure to HRT. The exact dose, whether high or low, does not determine the degree of feminization. Your personal ethnic heritage and constant exposure to estrogens have a much greater effect.
Having said that, there is very little current objective information in low dose HRT. Years ago, some homosexuals were chemically castrated in order to decrease their sexual desires. Reports on exact doses are hard to find.