First off, I wouldn't call it cheating!!
If you are going to strategically increase your calories to jumpstart your system, that isn't cheating in my opinion...
If you are still losing consistently (and congrats on your amazing success already!), I wouldn't mess with success.
I stalled out almost exactly 9 months in but it was due to hormone and medication issues. I stayed perfect on plan this whole time so I haven't changed a thing (except adding some extra calories on my intense exercise days).
I wouldn't tempt yourself and mess with anything until you have to. And I wouldn't call it a plateau if you have been losing all this time. Sometimes our bodies just have to work things out. And being a woman can also mess with things hormonally so just be patient.