How Soon to Up the Levels?

The air quality thing really did make a huge difference in this case. I was worried about uh upping the level shortly after that but I managed to get through it anyway. Maybe you'll have to spend a little bit more time in a particular place well book four says the beginner should do 30 minutes to an hour um and then Lieber E says not to not to graduate yourself to harder work until until it's perfect until the first fact is it's perfectly easy for one hour yeah.