Too soon?

My SO is a little apprehensive to start decorating our nursery. We are 23+1 with our second due December 25th. Due to a repeat csection we will like deliver 7-10 days early.  I   feel as though the end of the year gets busy with holidays and we will quickly run out of time. We both work 50 hours a week and have a 3 year old so it will likely take several weeks to get everything completed as it will get done a little at a time. Am I crazy? Or is too soon to start the nursery.