DS (asc) also in year 2. Is a big jump in expectations not so much from the difficulty of class work but the teachers move the bar on pace etc. from Jan teachers in some schools will obsess about end of year 2 SATs. We are in process of moving DS to a different mainstream school as teachers won't set him a different curriculum and just want to abandon him and his 1:1 to get on with it themselves. We had meeting before Xmas with EP backing us and teacher said after Xmas the curriculum would accelerate and she didn't know how to include DS. Which is ridiculous as he is not that far behind and well within what mainstream schools are expected to deal with.
I would suggest finding a school where a small fall in progress doesn't lead to parent bashing. We have had this and it's one of main reasons we are moving. You can't turn these attitudes around quickly enough for your child. I am kicking myself we have sat it out as long as we have. Things have been s**t for a really long time but we and his great 1:1 staff have propped things up. But there comes a point you have to accept you can't make a school care about your child if they have a negative attitude.
In terms of the work you can supplement this at home, get the teacher to write what topics they are covering and share weekly plan with you. You can do preteaching etc which can help. I found they jump around all over the place so DS never got to stay on any one topic long enough to cement any learning. DS made huge progress with primary maths app on iPad. Is your DS interested in learning using IT? There are lots of free sites you can use. You can of course just buy age 7 SATs revision books which will show you what they will be doing from now until may.
Start of year 2 is usually recapping, now they will be moving on to new work at faster pace and teaching to a test. In some schools all common sense goes out the window.
Another option is a token and reward system at school but to work well that would require your DS to have some 1:1 support who can give tokens and take him out for a break / reward - so you are breaking the session up.
It sounds to me as though you are in a school which is only interested in SATs grades. There are probably other parents getting similar grief as their children are messing up the schools figures. There is strength in numbers. Think about setting up a coffee morning or pub night out for parents with children with additional needs and advertise it through newsletter or noticeboard at school. You will not be the only one.
In terms of diagnosis we have similar wait here. Through campaigning (local NAS group), local radio, insisting on meeting commissioners etc we have not had some success in that GP commissioning group now having to pay to send children out of area to be diagnosed.
Is the EP involved? If not self refer and ask for EP to see your child in school and advise school pending wait for diagnosis. For eg the EP may say the school needs to put in 1:1 support - do not need diagnosis to do this.
All schools should run catch up groups for literacy / numeracy eg number shark etc ask what catch up small groups they run and if any would be suitable.
I don't know what your parent partnership is like but sometimes it can be useful to take someone along to meetings if only to stop the parent bashing.