A great piece of advice someone gave me MANY, MANY years ago for when after the little one arrives.
SLEEP WHEN BABY SLEEPS. Don't do housework, laundry, etc because, especially if you have a fussy baby, you never know when that sleep is going to come again...my little guy was major colicky and if he fell asleep in my arms rocking him, that is where I would sleep...with him in my arms in the rocker/recliner.
Best of luck in your last month...with the holidays here, the time will fly!!!