My 4.4yo dd1 is really struggling with her letters, she doesn't know the difference between numbers and letters no matter how many times we go through it. She has only just learned to count to 20 and only really knows one letter( the one her name starts with). I know you are not supposed to compare but all her friends same age seem to be writing their names, I spend a lot of time trying to teach her things but have had to cut back as I am frustrated that I don't know what I am doing.