I have had no difficulty getting this guy to grow till we got a few months of stunted growth.  I discovered I was under watering.  Then re-potted it also.  Now it’s growing healthy big leaves like never before and growing height quickly as well.  But what do I do with the little section of stunted and brown singed leaves? And do I separate from the bottom the second truck? Put it in its own pot? Neither truck is very think and strong and not sure how to strengthen that either.