It's often said when acquiring a property that you always want to have an exit strategy. As you've mentioned, things can happen along the way that might derail your plans, leaving you in a significantly compromised financial situation.
When I'm considering a property, I want it to be versatile enough for multiple exit strategies. If I attempt to flip a house and don't get the price that I'm looking for, can I do a lease option instead or BRRRR it? If those options don't come to fruition, does it still make sense to become a long-term rental?
If things played out in the scenario you have presented, you are likely to have a good chunk of capital tied up in the deal for a number of years, attempting to keep your head above the high interest, and if you are under-capitalized elsewhere you may be forced to sell the property at a loss to recoup as much as you can.
If you're not comfortable with those outcomes with the current BRRRR properties you're considering, you may need to look for others where you could weather the storm of a worst case scenario.