Obviously your attny knows best but the circumstances you would be petitioning the courts for legal fees are not due to income, they are due to the breach of the verbal contract the two of you had to use mediation to dissolve the marriage.
IMO those are two separate issues and one has nothing to do with the other.
I would also haul my ass to that attnys office tomorrow and find out what rights you have in lowering the monthly support you are giving her w/o an agreement in place. Do not let that come back and bite you in the ass. Again, she breached the verbal agreement and very well could be set to file a motion of her own for immediate court ordered support.