5 in the works presently. I do finish everything I start. 3 have the fabrics pulled and are waiting to start. #4 is started and the blocks nearly finished. I just prewashed the fabrics for #5 yesterday.
In order to keep the work flow going and not waste time, I plan ahead with pattern, collect fabrics, get them ready, etc. There is waiting time for fabrics to arrive, to dry, whatever.
So, yes, to your husband with a smile, I do work on one at a time usually, but always have several more planned and in the line up.