i am planning to take T in Dec, but have yet registered.
and i'll take the G next month too.
i think you need take a break or go outside to do some exercises, and keep doing couple days- 1 hr/day, then you may find you can concentrate on the G.
as for SC, if you do not feel good on the Daiquan, returning to OG may be a good idea, and review all OG in 1-2 days, then back to Daquan.
Thank you sendme for your advice. Actually I took a break this afternoon.
I drove my car to service, but unfortunately there had been several people before me and I had to wait at least 2 hours. So I ended up shopping a lot of delicious food, 话梅,豆沙包,ginseng candy and 白斩鸡. Well, I need a rich meal to resume energy and then go on reviewing SC.