Year 3 DS guessing when reading

[OverInfestedBadger]

Please can anyone help with strategies to stop an 8 year old guessing words? He had very poor phonics teaching in the first part of year one, and I just have not been able to get him off this habit now.
I asked his teacher today (I have raised concerns about his reading since year 1) and she said she isn’t very good at phonics teaching as they have done all of the basics by the time she gets them

He gets furious with me if I ask him to read aloud; he would rather read a book to himself and he then misses half the words as he can’t read them and obviously has poor comprehension.
I think I saw a video on here with a game to stop guessing, but this might be for younger children?

Have had the same and got them to read with finger under the words (helps to concentrate) and re-read or sound out words that they are guessing. Very frustrating for both DC and me but with perseverance it seems to be sorted out now. Maybe this would work for your situation?

Do the school ask children to read aloud as a homework? My ds's school does, even in yr6, and ds respond to the school's requirement better than me. So even though he rather read it to himself, he would do 5 minutes read aloud(school's requirement is 20 minutes, but I just find it pointless to argue as long as he does it.)

If he doesn't read aloud to you, there's no way he gets better, unless the school does something.
Also, the book doesn't need to be school book. Can be anything of his choice, magazine, papers, comics, etc, and doesn't need to be long. Read few sentences, a paragraphs, or a page, and talk about it, look up the vocabulary.

I had the same. He needs to resign himself to read out loud every day. Anything to get him to concentrate, no distractions and finger under the word with a no guessing rule.
I went through a Hellish month of this, then he got it. His brain was much more ready to learn to read he just had to get get over his mental block.

This is the thing I was thinking of!