Perfect pairs variance?

Been logging my blackjack sessions, focusing on perfect pairs side bets just to see how wild the swings get. It’s clear the variance is up there, but I can’t get a solid grip on what to actually expect over like a thousand hands. Sometimes I hit nothing for an hour, other times the payouts come in clumps and it feels like free money, which I know isn’t true.

Anyone here track their results long-term? Curious how your swings look and if you tweak your bet sizes to account for the variance or just accept it as the price of chasing those big payouts?