Hey guys, been working on the Beginner's Course for a few months now but only discovered the Spider exercise a few weeks ago. I have been working on this and there definitely is an improvement

Got a fretting hand related question.
I was watching the vid again and I noticed that Justin's fingers move absolutely independently from each other, but when I do it, aside from the obvious problems with speend and accuracy.... Here is what I wanted to ask.
let's say I press down with the little finger I have to REALLY FOCUS and play sllooooowwwwwww for the three other fingers to stay where they are. If I don't focus the other three are going up and forming something like an eagle claw Bruce Lee would be proud of
Or if I'm pressing down with my ring finger the other three are going up, and so on. I just can't get the fingers to say relaxed while only one finger is pressing.
I tried just now to play real slow and focus on only having movement in the finger that I need to press down with but it is SO TOUGH! I could do it but I spend so much time trying to get my brain to only send signals to one finger and leave the other three alone haha
Will this go away eventually as I get faster? Or should I consciously focus on fixing this now at the early stages as I am practising the Spider?
Thanks!