DS is starting year 3 next year and he still writes his S's and G's backwards on occasion.
His hand-writing was the goal that me and his teacher were working towards this year and he has improved out of all recognition but he still does the backwards letters.

He's doesn't have any learning difficulties, he's not dyslexic he just can't seem to break the habit.

Any tips? It would be great if we could get on top of it over the summer holidays.