Offer a manageable choice
Review a few suitable activities together and let your child choose one. The goal can be understanding a task or getting familiar with its rhythm, rather than beating yesterday's score.
Talk after a session
Ask what was clear, what the camera missed and when a break felt useful. These answers help improve the setup without labelling a child as good or bad at movement.
Look across several sessions
Devices, lighting and familiarity can change results. Compare experiences under similar conditions and keep your child's comfort as an important part of the picture.