Hi Robin,
Based on the relative peak intenstity of the Hα emission I saw the same trend. The relative intensity plateaued during the first 3 months of this year after falling during last year. However, when I convert to absolute flux using the Vmag measurements in the AAVSO database then the Hα flux looks to have increased a little in my last spectrum at the end of March this year, but probably with a significant error margin.
Cheers
Hugh