In a situation whereby you accept it as a means of payment while selling off your goods, then when you are out of stock, so you decide to restock your shop, so by then price of Bitcoin has dip so much that you can't buy all the goods needed in your shop, due to the fact that your money has depreciate in value because of the dip, what is the way forward in such a situation if your emergency funds can't cover up for the shortage?
What I can tell you is a way to prevent ending up in this situation. Once you get the payment in bitcoin, you can exchange at least a percentage of that bitcoin to stablecoin or fiat whichever you want to serve as a back up plan. Don’t hold everything in bitcoin as we all know the value is indeed volatile and while using it as a payment method we can’t deny that it still has its risks.
You would also need to come up with strategic purchasing of supplies. Depending on the nature of your business if you can buy as much when bitcoin’s price is still high then by all means do that so you wouldn’t experience shortages.