Shorten the lesson before you do anything else. Thirty minutes of half-attention is worse than fifteen minutes of full attention, and a restless child is usually a child in a lesson that is longer than their concentration, at the wrong hour, in the wrong chair.
Change these four things first
Length
Ask the teacher to run a shorter, denser lesson rather than filling the time. Most restlessness is in the last ten minutes.
Hour
Move it earlier. Most children have one good hour and it is rarely the evening.
Chair
A proper table and chair, feet on the floor. A child on a bed fidgets because the body has nothing to hold it.
Before the lesson
Ten minutes of moving, then the lesson. Not straight from a screen, not straight from the car.
What to ask the teacher to do differently
- Break the lesson into short blocks -- read, explain, read again -- instead of one long read.
- Let the child stand for part of it. Reading out loud standing is not a problem.
- Give them the pointer and let them lead the line rather than following silently.
- End on something easy that they can do well, so the lesson closes on a success.
What not to conclude
That the child is not interested, or not suited to it. Children of six and seven are not designed to sit for half an hour, and a lesson that fits them is not a lower standard -- it is the standard for that age.
If the same child sits happily for something else they enjoy, the lesson is the thing to change, not the child.
Related
Keeping kids focused in an online class
More on attention.
Starting Quran at four: what is realistic
If the child is very young.
The best time of day for a lesson
The hour usually matters most.