I did this in boxing. My coach was very fond of drills. I remember my first week (5 trainings a week) he only taught and drilled me how to move. No punchs, nothing. Just the various movements, rotation, how to shift weight, etc.

I did it for about 3 months like this, with maybe, maybe a 30-45 minute spar session per week (and at this time, I was doing 3 trainings a day during week, 2 on saturdays).

Had my first fight around the 3-4 month mark and won it without much difficulty.

I see this now that I am learning padel tennis. Been playing for a year or so, but I hardly do any games, mainly practise/drills with my coach (4 times a week). Maybe 2 games a month. I started in September not even knowing how to play, to surpass most people in my trainings, since the drills make me play in games as I practise, since it was drilled so much, while 95%+ of the people do one movement in practise, then get to a game and change it all, reduce speed, or just hit it wrong because they end up 'practising' more the matches with wrong technique/no correction, vs the folks that repeat the same movement 1000 times with correction. In a few months I may even get my beginners coaching certificate.

As Bruce Lee said: “I fear not the man who has practiced 10,000 kicks once, but I fear the man who has practiced one kick 10,000 times.