Hi Phil,
This posting on the MPML forum (Archive visible to all) confirm its changes in brightness
JWST 095 Observations (groups.io)
After observing other targets last night I had a look at JWST to get some video astrometry. By then thin cloud was coming and going. I haven’t reduce my data but at Jan 7.903472 it was near to mag 15, but a while later at 7.905556 it looked to be around mag 14.5.
Cheers,
Alex.