I have a lucky bamboo plant that I've had for almost 12 years now. It has seen better days and I'm trying to figure out what to do to get it back to health. The tips of the leaves are turning yellow/brown, which it's in a window that has direct sun exposure, so I am moving it. It's also really tall, is there a way to cut it down and increase the number of stalks? Is there a way to encourage more stalks to grow? I'd love to see if I can get this back to a healthy, thriving plant again.