[nsas]

I can answer your first question but not the others:

I use my Kangzhu pump that way: I put one of the cups on my left breast, I connect the pump to the cup, then I pump until there is enough (but not too much) vacuum which takes 2-3 seconds, I seal the vacuum with the green airlock and then I make the same procedure on my right breast. That's it. After 10 minutes I release the vacuum, massage my breasts and then I pump again.

I don't seal mine at all. I just pump until it's right enough to stay on then I remove the pump. I got the handheld pump from the same company. I've seen your progress. Very nicely done. What kind of massage technique are you using?