LOL, I dunno? I`m not gender Fluid, mine`s quite fixed.
although way back at the very start of my journey I wore gender fluid for a while just to see if it fit, then moved onto Bi-gender, and I took HRT then so I guess if you feel it`s Right for you then Sure! even though non of those actually really fit me and looking back was really just a way not admiting I was fully TS, as they both seemed to be less scary to me (just late stages of denial really), it Did help ease me into facing who/ what i really was.
I reasoned that you can take HRT for 3 months quite safely because doctors have said so, so I had 3 months grace and consequence free to find out, I owed it myself to find out!
if You`re Not TS they they won`t make you TS and you`ll just stay gender fluid, with a 3 month head start! LOL
Seriously though, I can`t answer that for Anyone other than myself, only present My reasoning for my own choices. and each of you really needs to do the same, you have to follow your Heart and listen to what she says! ❤️