Question on position sizing for altcoins after a significant run

Been trading crypto for about a year now, mostly dabbling with larger caps like $ETH and $BTC. I've had some decent wins but also some frustrating give-backs. I'm trying to get a handle on more disciplined position sizing, especially now that some of these smaller altcoins have run up so much. My standard risk per trade on $BTC is typically 0.5% of my total account, but for something like a low-cap alt that's already seen a 5x move, that same percentage feels a lot riskier in terms of potential drawdown if it corrects sharply. Do you guys adjust your risk percentage downwards for assets that have already had parabolic moves, even if your technical setup is sound? Or do you just let the higher volatility dictate a smaller absolute position size to maintain the same 0.5% risk?