Are knee-to-elbows planks impossible if you have a gut?

I’m a pretty big newb with this stuff but I’ve been following along the Calimove beginner program for a few months now and I’m to the point where I’m supposed to be doing knee-to-elbow planks.

I’m in pretty decent shape but I definitely have a belly (about 245 lbs). I feel like I’m doing the movement as the instructor says to, but my stomach is just in the way of me completing the exercise. My knee is barely halfway to my elbow. It seems impossible unless I lose some weight (working on it).

Anyone struggle with this?