Going back to work/schedule

Amanda
How many of you are back at work and have a good schedule you would be willing to share?
I have a 2.5 year old and my son will be almost 3 months when I return.  He is breastfed but will take bottles.  I've been pumping and freezing milk for him.  I'm getting super anxious about getting both kids out the door everyday.  With one I did fine but I'm worried about two.  
I'm able to flex my hours at work but will be taking the kids to our sitter 3 days a week.  Just wondering if anyone has a good morning routine or how you and your significant other balance the workload with kids and working.  My husband works 9-5 and can't flex his hours might unless its summer (he works on school buses).  Thanks in advance!