You could air layer it, and then cut it off

I learned this about a few weeks ago. Whatcha do is you make a nick at the point where you wana take the branch off. Then you fill that nick with fine sphagnum moss, or soil or something like that. i don't think ur supposed to use fertalizer. Then you get the moss to stick there somehow. you can use roap, or plastic, or tape i guess. All ya gotta do is keep that moss moist, and eventually, that part of the ficus will start to root into the moss. When it gets enough rooting out there, you can cut the branch off, and pot it
Good luck!
~Phoebe