JayDubs, I've helped quite a few couples go through a dead bedroom. Some couples can get over it, others can't.
I'm not an expert, but I can share my anecdotes. What I've noticed is if the couple enjoys intimacy and enjoys it while in the act, then the problem isn't so much in the act itself, it's in the initiation. THAT can be fixed. If the act is OK, but boring, THAT can be fixed. If the act is not enjoyable or just "eh" or indifferent, that CAN'T be fixed. If it's initiation, make a committment to each other, as horrid as it sounds scheduling nights and doing cheesy things like putting sticks with an act in a jar and each partner picking one a week will break this because it forces you to get over the initiation bump. If it's just OK but boring, there's things you can do there, the most crucial part of it is communication. If it's the last one, then either you need to work to get to the first two or give up. Your mileage might vary but I've seen so many couples get stuck in this rut. It can be overcome, but so many are so quick to just throw up their hands and say "screw it. I'm giving up" In the end, only you two will know if you have something worth working to save.