At our schools we incorporate rhythm into pre-putt rituals then carry that same rhythm through the stroke. Rhythm is the harbinger of consistency. You’ve got to find your own and groove it.
Although the saw grip falls into the “alternative” or “unconventional” category it may be the most natural hold of all because with the saw grip your right hand never strays from the correct impact position from start to finish.
Think about how you usually go about putting. You look at the green between the ball and the cup and “read” how much you think the putt will break on its way to the hole. You then make a few practice strokes and putt.