LO just turned 4. She's in preschool FT. She had been writing her name and other letters for several months. About a month ago she started writing the first letter of her name 'Z' backwards. Over the past month she turned more and more letters and numbers backwards. I've mentioned the backwardsness to her casually but I haven't harped on it or sat her down to try to fix it. Mainly because I thought she was messing around and/or it would pass. I haven't mentioned it to her teachers either.

I'm not worried but I am surprised it hasn't fixed itself yet. Is this a normal phase or something I should be addressing?