I have been there too. Sometimes, I still am. I have found that when I try to control my son's sleep it just makes me angry. I try to roll with his own idea of when he wants to go to sleep as often as I can.
I think there are some very good suggestions in the previous replies.
Can you let some things go?
Would cutting back on pumping, or cooking lunches, or laundry, etc - help?
Could you wear the baby in an ergo while he sleeps from say 7-10 or 7-12...