Thank you kindly aeh.
I appreciate your input very much.
Upon further discussion with DS, not only is he having a difficult time absorbing via the online lectures but the inconsistency of being in school 2 days out of 5 is apparently also disruptive to any consistency he is able to build with his learning for his most difficult classes which are pre-calc honors and AP Physics.
The school is not receptive thus far to my request as it claims it will interfere with their cohort placement and contact-tracing procedures. I will keep working at it and with DS to try to help him find other supports that will enable him to comprehend and apply the material.
Again, many thanks for the information.