The current position of SES-12 (from N2YO website) is :
Perigee: 2,143.6 km & Apogee: 62,531.1 km
That means the satellite is still in a highly elliptical orbit. As all of us know, communication satellites needed to be in 36800km circular orbit. The orbital transfer/correction process is going on and it should take at least 3 more months to position in circular orbit.
The satellite will be commisioned only after satisfactorily aligning the beams as per required footage and testing the signals. So altogether it will take around 5 months at least for the satellite to function