I have a 2 year old DS and baby sister just entered our lives a couple weeks ago. Today is my first day alone with the two of them now that DH went back to work and holy crap am I tired! I was up with DD at 11pm, 1:30, 4:30, and then 6:30 when big brother woke up. Any tips on how to survive the day? Can't sleep when baby sleeps anymore.