I inherited a hibiscus in the fall and have been growing it indoors over the winter. Unofortunately, I think that i may have killed it. Many of the top branches appear to be dead (leaves have fallen off and no signs of new growth. The bottom branches still have green leaves however and there seems to be tiny signs of new growth, so i know the plant isn't completely dead. What should I do? Is it possible to prune the dead branches? Will new growth start? Or have a completely ruined the plant? I'm very new to hibiscus growing but love them and am willing to try anything! Any suggestions would be greatly appreciated!