It is looking probable that DS will miss a year, or even more than a year, of school, due to illness. Some of this time will have been spent at hospital school, and his home school have provided a bit of outreach teaching, but it’s not the same as being at school.
It seems to me that the best thing for him, given that he’s summer born and has never found school all that easy, might very well be to stay back a year. Is this likely to be possible? Are there future problems I need to be aware of before advocating for this?