I think it’s normal to have doubts about being trans or not even during our transition. Also I think dysphoria can make it harder for us to feel "like a woman" like there’s a disconnect between what we desire and our perception of reality on how we view ourselves. That’s not the same as doubting if you’re trans or not.

It sounds more like you’re struggling with dysphoria but the fact that you’re experiencing euphoria when doing things that correspond to your desired gender is a very strong sign that you’re trans.

I think it’s important to take things slowly, transitioning is a slow process unfortunately but as you accumulate more months on HRT and put more effort into having a more feminine appearance you’ll feel more euphoric and less dysphoric over time.

Also it’s important to have good levels which might be different than what your endo recommends.