Hi , I need help with my ZZ PLANT. I have had this guy for a few years now and he has grown like crazy. The stems are almost 4 feet tall but are all over the place. I’m wondering if they are just too heavy, do I need to put him in a bigger pot?, tie up the stems to support? PLEASE HELP. I am located in Oregon, this is not the normal location of him nor is it overwatered.