My child has never been able to write well. What if he can't learn calligraphy for two months?
If you can't write well, buy a pen and let him practice. It's no use learning calligraphy with a brush. Learn bad gestures. The younger ones and the older ones began to learn Chinese calligraphy.
Take your time, don't worry, learning to write wasn't built in a day. You can't eat a big fat man in one bite.
You can get better if you like it. It is also a way to make him like pen and paper.