Reception reading, when will he move up?

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Ds started Reception this year, his first book was brought home on the first October, he has been on these books since then.
They are the wordless ones, first few weeks they were ORT so had a story to them and were reasonable to talk about but recently he has been on the Collins Big Cat books which are rather boring and are usually books such as 'How to make a Maraca' which doesn't leave much room to chat about the contents.
I am at the stage where I want to ask the teacher how much longer we have to endure these books, ds is sounding out sounds and blending rather well at home, I have had 2 meetings with the teacher and she explained that he is not speaking well at school, he has speech delay so understandable but I don't want him to be on these wordless books forever due to that, as he talks fine at home.
We do read books at home with words in, with him, but I would like him to progress at school too.
So when does the teacher normally reassess reception dc? and will I look pushy if I ask her when we can expect a worded book?
TIA

bump

His teacher will be assessing him every day ...can he read simple words?

Sorry I see you said he is blending well at home ... I would expect books with words to follow soon.

Yes he can read simple words, I trust his teacher, she is fantastic, I guess I would just like a rough timeline so I don't feel like he will be on these wordless, storyless books forever.

I just put a message in ds's reading record asking for something a bit more, as he was reading the books sent home with him before we'd even reached the car! I was really worried that I would sound like a nob, but she wrote a lovely note back saying that they do like them to complete the series but she's bumped him along and given him a slightly trickier one, which has been a good challenge to him. She obviously listened to what I said and realised that at home we have a good idea of what's going on. I think you're right to ask to try a worded book, especially if he's getting bored with the picture ones. I don't know much but I can't see why him speaking less at school should affect the books he gets if he is able to read them at home? Probably a teacher will be along to explain it better than me.

Thanks mrz.

unexpected I don't really understand that tbh, his speech is improving a lot so I don't want him to be held back due to that.
I may get dh to speak to her in the morning then, just asking when we can expect worded books as he is doing better at home. Thanks

Have you looked at the free ebooks at MN learning and OxfordOwl?

All you need is a marker pen and a clean sheet of paper. If he can already blend at home you can let him read simple sentences that you've written, and, if you can draw things which are recognisable you can illustrate them too.

Mrz no I didn't know about the ebooks, ill download them thanks.
Learn I do write things out for him which helps and the pictures are a good idea thanks.

www.mumsnet.com/learning/ebooks
www.oxfordowl.co.uk/Library/Index/?AgeGroup=3

Thanks mrz :)