Hi Maurice,
Yes I’m sure this is sound advice and the Chinese do work in a similar way when they are young and developing. The reason most players don’t practice like this is simply down to time, if you play 3 times a week for a couple of hours for example, you don’t get a chance to practice many different areas in that time so it’s nice to focus on a few different things.
I believe if there is a particular shot or area you struggle with however this could be a good method to become more confident and gain the muscle memory for it to help progress.
