Q.Croton advice
My Croton has 3 main stems and is about 40″ tall. It has recently lost some of its bottom leaves. What is the recommended pruning for this plant? Should I chop it off at 15″ and let it grow back?
Will it regain lower foliage?

Cut all dead leaves and branches back to the point of origin on the parent branch or to the main stem.
Cut back any long, overgrown stems just above a leaf set to maintain a compact, bushy shape.
Hard prune the croton, cutting the stems back severely if the plant becomes leggy with little leaf growth at the base of the stems. Remove only one-third of the total stem height at a time and allow the plant to sprout new growth before continuing to reduce the height.
https://www.gardeningknowhow.com/houseplants/croton/croton-dropping-leaves.htm