I would advise the opposite.
Stop playing live for a while, and rebuild your roll online. Once you start beating 25NL+ - if you have the money for 200 / 400NL live - go back.

And every time you play live, track you winnings losses. It sounds like you're not being very honest with yourself. You're not just magically doubling up every time you play. Make an excel sheet and enter the time you played - an estimation of how many hands and the profits / losses.
From that you can also get your standard deviation and crap like that, so you can see if playing with a 20x buy-in roll might actually have an acceptable risk of ruin.