Your estrogen is really low and you have not mentioned any androgen replacement.
You really need to get much more aggressive about this, it is harmful putting young women on grandma's dose of estrogen and hoping everything will be OK.
Is there any reason you can't take oral estrogen?
It is generally easier to achieve a therapeutic level within the product's licensed dose, for multiple reasons, vs patches, which often struggle to provide adequate levels and providers particularly within the NHS can be reluctant to increase beyond 100mcg.
Additionally where someone under 50 is having difficulty accessing therapeutic replacement due to their clinicians not understanding the implications of undertreatment, the combined oral contraceptive pill taken continuously can be a better option for bone protection, because it provides a more age appropriate dose of estrogen than treatment designed to palliate vasomotor symptoms in much older women.
All being equal, in an Idea world, yes transdermal estriol is metabolically more favourable, but the elephant in the room is subtherapeutic prescribing, hence pragmatically it can be better to use the pill, as this takes dosing out of the hands of the reticent prescriber.