What’s your main approach to managing variance during a long season?

Hi all,
With NHL/NBA seasons being so swingy, I’m curious how experienced bettors here manage variance over the long run.
Do you mainly stick to flat staking, adjust unit size based on confidence, or have strict stop-loss rules during downswings?
Also interested in how much volume you consider “enough” before evaluating whether an edge is real or just noise.
Would appreciate hearing how long-term bettors here handle the mental and bankroll side of season betting.