Help with hand positioning.

Hello I am new to learning typing and right now I am trying to correct a bad habit that I had where I would use my right index finger to press space bar. I have been correcting it over the last week where I found success going from about 70 wpm to 90 wpm by changing that, but my hand positioning still feels weird. And while I know that will go away with time, I want to make sure that I am learning correctly because the main issue I have that led to the bad typing posture is that I rest my left hand on w a d and shift and space because of gaming lol.

TLDR: Should I correct my W A D Shift and Spacebar Left hand while I attempt to fix my left index finger spacebar issue? And should I just commit and force myself to learn the proper touch typing positions with my index fingers on H and F?

Thanks for your help in advance