One possible version:
Dear Lin Tao,
I’m sorry to hear that you’re having trouble with your schoolwork. I’d like to give yosome tips to help yodeal with the problem.
First, yoshould make a schedule about your life and study, which can help yoorganize your time well and do everything in perfect order.
Thirdly, don’t forget to combine study with pleasure. Try to relax yourself by listening to music or doing sports whenever yocan. As yoknow, all work and no play makes Jack a dull boy.
All the best!
Yours,
Li Hua