If it's brown under the bark on the trunk, I'm afraid it's "Code Dead"
Try again, this time leave it outside - it will love S Texas!
For indoor stuff, check out this site for info:
I've bought a few of his books and find the info excellent - after all, he did write THE
book on ficus!
If you're like me, I'd wait 'till the whole tree went brown before I throw it out