For weekly ting xie, i asked ds to record on the phone and then practise. He'll practise once daily. I will mark after he has practised. The school subcribe to eshizhi (it’s web based). I have been nagging to ds to spend at least 15 min on this daily. If he stuck with homework, I get help from friends. Take a snap of the problem area, whatsapp to my friends. The rest are done by ds tutor.