Hi,
I've just recently gotten back to SFQG myself. I listened to the CD's again and I suggest you do the same. All of your answers on on the CD's. For instance Master Lin says the best practice for beginners is 30 mins because Qi completes a cycle in 28 minutes.
When I pratice I just look at the clock on my dresser when I start and occassionally during practice, I'll open my eyes to see the time. You could wear a watch but an alarm would be too jolting to end the practice. Master Lin also says the minimum time to practice is 10 mins.
