Congratulation mate!
I've got a new daughter in my house as well, so I can empathize...
The good news is that with the baby being that big, he shouldn't have long to go before he can eat enough to get himself through the night. Once babies are 14lbs. or so (so the "experts" say) they should be able to eat enough to sleep through the night. Works for some, not for others.
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Now where did I leave that doughnut?!