I had problems with tapering Entocort earlier this year. Turns out it was not reaching down far enough into the colon, according to my GI (last 40cm of colon continued to be very inflamed, as the c-scope showed). I had to use cortifoam to get at the inflammation at the end. This worked (so far, anyway, keeping fingers crossed) although I had to taper slowly and not both at the same time. I alternated reductions in entocort and cortifoam.