I know that there are two schools of thought on the idea of taking Sundays off during Lent, because it's a feast day, not a fast day.
I do celebrate Sundays as feast days, and enjoy that little break from fasting. I do NOT consider it a time to take a break from the "good" things I have resolved to do during Lent, such as reading The How-to Book of the Mass. A feast day is never an excuse to stop doing a good thing. But I do allow myself a chance to have that Milky Way I've denied myself all week long.
And then comes Palm Sunday, and this one just doesn't feel like so much of a feast. And I don't feel too much like eating that Milky Way.