rubber tree plant
Gardening Reference » Gardening in 2002
The important thing is the new growth you are getting on top, not the older leaves you are losing on the bottom. Your rubber plant is healthy and doing well.
You can leave it alone and watch it grow ever taller and more top heavy. Or you can prune back one or more of the stems to a height where you would like to see new growth. If you prune one stem at a time, it won't be so noticeable.