Got to give my 2 cents worth !!!
Like Daisy said the trunk is a resevore of water. Hope you havent thrown him out !!# He needs the right kind of medium to grow in. The hell with timing. Re-pot him (should have been done when u got him) the medium he is in is probaby good 4 Hawaii. Then water every 2 or 4 weeks. Water kills. Stress dosent. So stress him ###. Good luck.
😎😎😎