I'm a Reception teacher.
Being able to write his name is great (I don't teach them to write surnames in Reception. If parents want to teach it that's great, but it's not necessary at this age to teach in school unless there is another child with the same name and the same surname initial in the same class). I think it use to be Year 2 they taught them to write their full name (if they couldn't already do it by then), so they can write it on their SATs paper.
Independently blending CVC (and words with 4 sounds) is great too. Reading CVC and knowing a handful of sight words (I, the, to, no, go, he, she etc) is where I would 'expect' a child in Reception to be by the end of the Autumn term (but I would still be saying don't worry if they're not there, as there's still plenty of time for it to click). Every phonics scheme is different. My children receive books with far more than 2 words, but it's likely his scheme is different so I'm afraid I can't comment on that. Ask his teacher if you feel he should be more challenged by now and see what they say. It might be that that type of book is typical of their scheme at this time of year. I wouldn't imagine it's because he's behind or struggling, as he really doesn't sound like he is from what you have said.
In maths we mainly work on numbers to 5 this term. Not just counting and numeral recognition, but finding one more and one less, and composition of those numbers (knowing different ways of making 3, 4 and 5). Subitising is a big skill worked on in this term to, which means recognising amounts to 5 represented in different ways (eg dice patterns, fingers, Numicon pieces etc). So if the children see 3 apples in a triangle pattern they instantly know it's 3, rather than having to count them. Or if they see 2 red pencils and 2 blue on the table they know there are 4 altogether, without needing to count, because they know 2 and 2 is 4. I hope that makes sense?
Don't worry about bigger numbers. Verbal recital of numbers is a very useful skill, but it's not counting unless they are assigning each number to an object or action (eg counting how many toy cars they have, or counting out 20 claps). If he can verbally count beyond 10 that's great, but I wouldn't be worrying that he doesn't recognise numbers like 34 yet as that is a year 1 skill. Each school is different but I haven't started numeral formation yet with mine. I would usually do that in Spring 2 (after Feb half term). Any recording we do in maths at this stage is purely pictorial, eg drawing 2 apples and then one more to represent 3 altogether.
I would expect children to at least be able to take their own jumpers, shoes and coat on and off by now and feed themselves independently so he's doing well there too. Work on the zip over the holidays. About half of mine can do it now, but I still have quite a few who can't.
From everything you have said, he definitely sounds on track for the end of Autumn 2 👍🏼