I will tell you that over at the newbies JUDDD thread on LCF, they have suggested that you really need to reach or come very close to your ud calories or the dd is much harder. Plus, the consensus there is that if you consistently go low on your ud's you will most likely stall. They suggested that if I do keep with the M/W/F dd's (which I will till at least June first!) that the day before needs to be the ud, and that the moderate day would be Saturday (in my scenario).
My big goal here for June first (and I don't normally like to put weight and date together but here goes) is to reach what I just realized was my primal low weight, of 250. Apparently sometime in the past year or so I did get down to 255 since that is the start weight in my fitbit, (it was May 2012, I just checked it, although I was 251 in March 2012).
The one after that is 235, which is my most recent low weight, it was June 23rd, 2008, sad.