As I wrote back around Thanksgiving, I had some new ideas I had decided to add to the story which were going to delay completion of the draft. Well that certain did occur: I haven't written a single word for the draft since then. I did revise the story outline quite a bit, and that work is almost complete. When the outline is done, which includes all the scenes I will have planned to add or change, then I will begin actual writing once again.
Best guess at rough-draft completion is now looking more like mid-Q2.