You seemed to be asking for comments for other mothers or parents.
Exercises do not prevent increasing myopia, nor do reading glasses, bifocals. Rigid contact lens can mask increasing myopia but soft contacts do not. The rigid contacts do not actually stop the eye from becoming more myopic.
Look at it this way. A eye that is getting myopic is growing too fast. If a parent decides they don't want a tall child what can they do to stop the child's growth? Answer: nothing that's ethical/legal.
JCH III MD
there was no comment from you.. any advice?