In such cases, converting or mere hodling may not be the best solution.
If panic rules on the market, many people stop thinking and as a result, BTC or another crypto may (and often does) reach the price level of underpriced. Therefore in many cases, the best choice may be simply to buy more (like all the whales do). Just remember that if you bought during the last cryptowinter (when the panic was much worse than now), Bitcoin bought then is worth more than 250% of the purchase price.
And remember that, stable coins are related to fiat currency, and countries like US and China already started next period of printing their currency out of thin air, so then the objective value of stable coin related to USD keeps going down.