Hello Ajanta,
Welcome to the SFQ forum.
I'll take your second question - Yes it is OK to lie down. Master Lin states all exercises can be done , sitting , standing or lying down. I still often do Small Universe whilst lying in bed at night. But it is preferable to eventually do it seated in lotus position. This will come in time and with practice. If you are not able to sit, lying down is fine just doing it is the main thing.
You finish up somewhere else - also fine, just add a bit more of the circuit doing the breathing and making the Oom, Mawh sounds (out loud or in your head ) yourself till you end at the Dantien position. Most people do this one at different speeds anyway and you will find your own speed eventually.
There is no right or wrong here only good, better and best. Enjoy!
Love & light
Faune
