Struggling with risk sizing on pullbacks

Hey everyone, new here. Been trading forex for about a year now, mostly scalping $EURUSD and $GBPUSD. I'm finding my edge on entries is okay, but my risk sizing on pullbacks is where I consistently screw up. I'll get into a decent setup, the market pulls back slightly, and my stop gets hit even though the broader trend confirms my initial direction an hour later. My question is, how do you guys adjust your risk per trade when you're anticipating a potential pullback? Do you widen stops, reduce position size, or just look for different entry criteria entirely? Feel like I'm leaving a lot of money on the table by getting stopped out too early.