@seeking_new_church My brother read the time machine, all the harry potters, and much more by 2nd grade.
I didn't read a single yes
not a single book till I was 12 or 13 and that was the hatchet. I listened to the audio book with it.
So long as they can read things, even if it's not books, and they're overall doing okay then they're fine m8. You could try to read them stories to get them more interested in books (I was read the magic treehouse books a lot) but it'll probably not do much other than give them some good memories and make them comfy rather than spark and interest in reading.
They'll work it out though. I could read, I just simply didn't care to. When I turned 14 I only read the hatchet, literally nothing else, and like I said that was with an audio-book, but I read literally millions of words online, thousands of books worth of educational material, and read many actual books that are "upper-level" such as das kaptial and understood them perfectly fine.
I also know a 6 nearly 7yo that barely reads more than picture books and a 4yo that can already read those small chapter books that are like 3/4th words 1/4th pictures and like 30-40pages. Kids will go at their own pace and excel in what they're good at without any aide, although a little doesn't hurt of course. When I was young I didn't read at all like I said, however I could do any mathematics up to algebra 2 in my head since about 3rd grade, and while I was ahead as you could be in math I didn't learn anything more in it till I was 15+. The same applies for space-science, I literally knew more about it than my 8th grade science teacher, however come 9th grade I had no interest in biology and for many reasons didn't even bother attending the class.