A child who struggles in one setting may be showing you the setting needs attention.

Difficulty gets located inside the child by default: their focus, their attitude, their character. But the same child is often fine in a different room, with a different adult, at a different hour, which points at the surroundings rather than at them. Noise, seating, timing, and the size of a group all produce behaviour that looks like a personal failing.

Compare the settings where they do well with the one where they do not, and look for the difference. Change something in the environment before drawing conclusions about the child.