Stages of plumpness?

Hi, I'm 2 weeks into using my LL and am really pleased, overall. I can now achieve a serious fullness and pout to my lips with 4x10 second pulls. Unfortunately, this only lasts moments before my lips return to just slightly larger than usual. Is there any way to make the temporariness of the initial pout last longer? Will this happen over time? Also, if you have a break from using LL do you need to re-do the conditioning phase again?