We still aren’t doing too much screen time in general but in the past month we put on a show for 20 minutes for him so that we could eat in peace after my husband and I both had hard workdays. We also sometimes play YouTube videos where it’s a slideshow of pages in a book with a voiceover of someone reading the book. We usually only do it for books we own, we read to him a lot. So it’s basically like someone else reading to him a book that he already loves.
Is there a chance you could get help to take care of him? Screen time develops violent behaviors in kids so maybe going to the library or doing a different activity would be a better idea.