I hear you. I've been stuck in the same performance/weight rut all month (March). Mixing up your routine and adding some lower intensity is good advice...

FWIW, I have a Tatina BF scale. I find the better shape you are in, the less accurate they seem to be. The number fluctuates as much as 4% throughout the day. I was disturbed by the BF reading so much on my scale that I checked it against other methods including a hydrostatic dunk. The Tatina was the LEAST accurate (for me) and was more than 7% different than the hydrostatic result (thankfully). Calipers were within a percent and the body measurement method was within 3% of the hydrostatic number.

Try not to get too hung up on the numbers (I should take my own advice ...). In my own experience my best peaks have come after an extended plateau.