If you have already tried Urdu writing books, then try wooden slate with ink & wooden Qalam.
In our child hood it was common practise we wash our “takhti” twice a day & write to show our teacher, one in school & one at home. So when we write, would be checked by our parents & in the school by our teacher.
I do not know that you can get this wooden slate or not but talk to your mom she will understand & can arrange it for you. Inshallah it will be great help to you. Do not loose heart. Continuous hard work is the key to success.