DS1 is 6 in a couple of weeks. He's progressing well at school by all accounts, enjoys his time there and enjoys the extra stuff DH and I do at home with him. He's starting to read and his writing is improving. My concern is that he frequently writes letters (mainly b's, d's, s's, t's) and numbers (mainly 2, 3, 5, 7) backwards, as in mirror image. Also just before they broke up for summer he wrote his whole name backwards as in every letter and the whole word as a mirror image the wrong way across the page. Quite an amazing feat really and it was fasinating to watch but it has raised the spectre of dyslexia in my mind. He genuinelly didn't realise he's done it until I pointed it out to him. DH is mildly dyslexic as is my sister.
Is this normal? His reception teacher brushed it off, but he hadn't written his name backwards when I spoke to her. Should I raise it with his Y1 teacher or just wait and see if it improves?