Also, here's a link to a homeschool educator's handout (from a conference) about students working independently and how to get there during the later elementary years. It's totally ok for your DS to need your attention focused on him to learn right now, especially with all that he has going on. Jumping ahead to the "Assign and Check Parent" leads to learning gaps when it's done too early IME.
https://welltrainedmind.com/a/teachi...independently/ (It's a really great outline of progressively moving older students toward taking charge of their education, starting in 4th-5th grade and culminating in high school)
Levels of Supervision:
Parent at Elbow (PEW)
Hovering Parent (HOP)
Assign and Check Parent (ACP)
Start and End of Day Parent, On Call (SEDPOC)
Start and End of Week Parent, On Call (SEWPON)
Tuition Paying Parent (TPP)