I've found that printing can help a lot in these situations. While you can't always print everything, math notes and scratch work are still much easier on paper, no digital solution has fully replaced that yet! The article is focused on reading, but I recall previous discussions on the neurological aspects of writing and motor control, where much of our brain is linked to muscle control and dexterity [1].

[1] "Effects of Physical Activity on Motor Skills and Cognitive Development in Early Childhood: A Systematic Review" (2017) https://onlinelibrary.wiley.com/doi/pdf/10.1155/2017/2760716