Weight loss

Hi, I’m 27 and am planning on transitioning mtf.

However, I’m a bit over 100 lbs overweight. As of right now I’m just planning to lose the weight first, which will take 1-2 years with the diet I’ve been doing.

But obviously I want to start hrt asap and I already feel a ticking clock.

Should I lose weight first or go ahead and try to start hrt? Does anyone have a similar experience or know the pros/cons of both?