Here some playtalong tracks to train the chromatic notes on the bansuri.
This is purely technical and mainly to enhance your intonation, as playing chromatic notes is one of the most difficult things on the Bansuri. There are more musical approaches like approach notes and enclosures, applied to scales and arpeggios, but this one here is simply moving up the whole range of the flute, one by one.
The “small range” starts from low C (Hindustani System: Pa):
The “full range” starts at low B (Hindustani Tivra Ma):
Each one is repeated 4 times and moves on to the next chromatic step in the same way: