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Sorry, we have a site policy not to quote dosages, so I've edited yours out.
Generally speaking, the estrogen pills trans women get prescribed are primarily intended for women going through menopause or after - to supplement low estrogen levels - so it's the same thing, and for a similar purpose, to raise your estrogen level. The dosage your doctor gives you will depend on your original estrogen level and how high s/he wants to raise it.
Did you have base blood levels taken before you started on E? And more recently to see how the levels have changed?