Any other lightweights have a ONE (now going on) two week stall?

Well, first of all, a stall is when you don't lose weight for two weeks in a row. So you aren't in one and can relax.

Secondly, you can't NOT lose weight if you are eating 300-400 calories. It would defy the laws of physics. OTOH, you can certainly lose fat and not have it show up on the scale right away because you are retaining water. Lots of people see this early out especially right around the time they move from liquids to mushies and/or mushies to solids.