I'm fairly certain I would not have been able to fully sort myself out without being on my own for several years. Being with someone can be great but it can also serve as distraction for not adequately dealing with your gender dysphoria.When the partner is hostile or even semi-accepting of a trans identity it delays the process you need to go through to find your own solution. I know many trans people in marriages where they are constrained in that they love their spouses and so will settle for whatever formula they can get.
Life is inherently a series of compromises and there are no perfect scenarios, but I know the level of constraint that works for some wasn't going to work for me. I had tried that for years and it was only getting harder over time.
The quiet helped.