dd is just turned 3. she is (or maybe should put was) ver interested in numbers and letters. by 2.5 she knew her numbers to 100 and can(could) add and subtract 1 or 2 to or from numbers. Now she pretends she can't recognise single digits. (and will argue that black is white until she's blue in the face!)
It's the same story with her letters and reading. she pretends she can't do anything. (although she occasionally has flashes of interest with reading as she really wants to read)
She has been going for 2.5h per day to pre school. I'm not sure if she is trying to "fit in" but I suspect the rest of the children recognise their numbers and letters as she is the very youngest so she would be trying to be behind.
has anybody else gone though this kind of phase? should I push her or just let it go when she deliberatly gets things wrong?
Just read to her. The rest will come, she won't get stupider! My son started reading at 2.6 however we still have days when I'll ask him to read to me but he'll say he can't. It just means he doesn't want to. (Today he read a paragraph perfectly - but backwards - to prove he 'couldn't' read!) Pushing anything at this age does more harm than good. Read to her with her on your knee and point to each word as you do so.
It does sound like she's getting bored of working on letters and numbers. Just let her do what she prefers at the moment and she will rekindle her interest when she is ready and doesnt feel pushed into it, honestly
At this age they go through bouts of interest, and then just want to play.
You need to be very careful that she doesn't get the idea that she can 'please you' by getting reading etc right. This could lead to attention seeking by refusing to do it, or lead to over-perfectionism, where she won't try things she's 'not good at' in case of failure.
There's no hurry - and they don't get any prizes for reading early! What's more, early readers often get bored in reception, and the others catch up anyway, so it's nice if they can get to reception and be excited by what they're learning.