I have had this enormous Dracaena reflexa for about 20 years and it's very dear to me! It has completely outgrown its pot. Three of its stalks are about 7-8 feet tall that I don't know how to handle. Are they able to be trimmed or do I need to re-pot and take the roots apart? I am afraid if I re-pot it won't live. I have the opposite of a green thumb! Thank you so much for your assistance in advance!