It's probably not excess cecals, but improperly formed cecals that are getting left uneaten because they smell wrong to the rabbit, which is called cecal dysbiosis. This is usually from too many carbs and not enough fiber in the diet. So yes, I would reduce pellets some and free feed a good quality grass hay, making sure the bunnies are eating it well. More fiber from good grass hay and less pellets, will usually correct the problem.
https://rabbit.org/intermittent-soft-cecotropes-in-rabbits/
Unless you aren't feeding a grass hay but are feeding alfalfa hay, then it could be excess cecals from a diet too rich in protein. That's corrected by transitioning to a good second cut(medium coarse) grass hay, and making sure they're eating it well. And if they continue to eat too many pellets and not enough of the grass hay(at least a pile of hay the size of their body per day), then I would reduce the pellets to an amount that gets them eating enough of the hay.
With any diet change, it's always important to monitor weight and body condition, to ensure unhealthy weight loss(or poor growth in baby rabbits) doesn't occur.