Did you test it right away, or after some amount of time?

If it improves the flavor right away, you can try option C of simmering not quite the entire batch, so that fermentation resumes after you recombine.

I tested it right away.

Won't leaving it fermenting cause pressure to build up in the bottle? And the contents to exit when you open it?

I’ve never had that issue but I can’t say you wouldn’t. My experience is that the fermentation that goes on in the fridge, for nearly anything but the most active Tepache, is pretty gentle. You should be ok if you leave a little headroom and/or don’t seal the bottle all the way.