My DS is 4.5 (July baby) and still won’t write or pick up a pen he can recognize his name and some letters ( about 4 in total) but that’s it. He loves LEGO, diggers, tractors, any tools etc. I have tried to relate trying to write to his what he lives but he just will not pick up a pen! I am freaking out here, he is due to start school this year and I’m getting worried that he won’t cooperate in class, or should I back off??