Constant Descent Final Approach.
I believe the lower MDAs are available only if CDFA is followed all the way to the Stated DME distances.
CDFA by definition of FA only applies after FAF.
I have never heard of a regulatory requirement to fly a CDFA to permit use of a lower minima. This is not a "vertical guidance" approach (such as a RNP LNAV/VNAV or LPV); it is an NPA/2D approach.
The Indians must have something specific/unique in their AIP that allows for lower minima if a CDFA is followed; using what, I wonder? VNAV?
Don't be misled by the BBB DME/Altitude table which is the profile reference nut not official, hard-coded SDFxs.
That is, I assume, on the state plate. It is the profile that, if followed, will keep you clear of all limiting steps. Nothing to be "misled" about it.