The problems with attrition and recruitment are not limited to the pilot corps. They are having a lot of difficulty attracting and retaining personnel in all areas - this directly from HR. It isn't hard to see why when your grocery bill doubles in the span of a year, and you don't have company accommodation to shield you partially from inflation. It used to be you stayed until you could afford to leave. People are leaving now because they can no longer afford to stay. More than a subtle distinction, no?
Attrition slowing? On the contrary, as noted above it has to be examined in the context of both the three month notice period and the time of year. Month over month alone is not the whole picture.
But to bring it back on point, making regressive changes to rostering is hardly a wise move when trying to recruit for an expansion.