Track the Prices carefully. Normally after Big Sale like Republic Day, Independence Day etc, sales drop as big sellers llike cocoblu retail drop prices significantly, to empty their FBA stocks. If you are in direct comp with their listings, then sales will revive faster, as their stocks run out (low prices).

If you are in in-direct competition (category), then revival will be late, as their listing just sold huge products and gained reviews, now they can sell high at higher prices also on their own listings. But Traffic diversion to your listings, will be supressed.

Thanks for the good question.