In a rangebound up down volatile market, it may also be prudent to watch 30 min charts closely.
What I'm seeing here is a pivot at 3957 In NF around 11-12 PM, depending how one compresses data.
Further on, should NF break new ground to the up, then on 30 min there would be a pivot at 3995 around 12-1 PM bar.
For now depending on the current 30 min bar, I may look for SAR at that 11-12 PM bar.
Please trade with your own rules, now that pretty much everyone here is quite adapt with the flow trade.