Well, the wood is free, but I'm paying for it!
Tonight will be an aspirin night.
Perhaps you could remove the gas-line and burner, and retrofit back to wood, if you have a supply. It is comforting, luxuriantly warm, and saves money and fuel.
We could have done that with the fireplace in Oklahoma, but our fake fire here is a self-contained gas unit, no chimney. It vents through the dining room wall, like a clothes dryer. The good thing is that all the heat goes into the room, instead of up the chimney; the bad part is the cost of gas.