I don't think less treatments work in the initial 'getting dry' phase but I'd suggest doing a lower amperage of 15mA for hands. It may help with the cuts...
I personally found that only when I started doing ionto treatments I would get cuts from the treatment. Several years on I never really get cuts anymore.
What helped me a great deal (I don't know if you do this already) is to treat both hands and both feet simultaneously; both hands in one tray, both feet in the other tray (I use a plastic storage box as the other tray cause the factory tray can't accomodate much less cover enough of my feet). I did that for 3 weeks straight each day for half an hour on 15 mA before I achieved complete dryness of the hands for the 1st time.