My bearded dragon did something like this too. Your doing the right thing by giving him her frequent bathes. I think the reason for the inactivity is due to the beardie not getting enough heat, it could be cold which kinda shuts them down and makes then go into a natural stage beardies go through called brumation. I’m not an expert, but that’s what my beardie went through. I think your beardie not pooping regularly could be natural or a sign. I would just keep doing what your doing ( regular baths, regular diet, etc. )
My beardie doesn’t poop regularly either. 🙂
-Jenna