I am assuming that you cut the top of a dumb cane off and rooted it. The fact that you have all nine leaves still intact and presumably in good condition is a good sign. Unless the plant has been rooted for quite some time I would not worry about the above soil growth. When you root something that has a lot of foliage, It often takes a while for the roots to catch up. As a result the plant will put all of its energy in forming those roots and will not put on new foliage. So as long as your plant looks healthy give it some time. You can give it a very very diluted amount of fertilizer. I caution you to make sure that you don't give it too much fertilizer because this will burn the roots. Please keep me posted.