What is it that prevents me from doing it the next day?

Okay it seems the more I have these experiences with the vibrations and then leaving my body to some extent, the closer I am getting to where I want to be, it pretty much is my training, but when it happens one day, and I try to get in the same state and position the next day I cannot trigger the vibrations for some reason, I don't try to force it or anything, I am just as relaxed the second day as I am the first day, do you get like energy that enables you to do it drained out from you the day before or something? Because that is how I feel sometimes, because I am pretty much doing the same things that got me into the state that triggered the vibrations on the day before but fails the day after, I am still stuck on only being able to get into this state to trigger the vibrations twice a week, is it possible to make it 4 or 5 times a week?