I always equate new puppy = newborn baby...and you've got twins!
It's such a huge upheaval in your life, I know I've felt exactly the way you're feeling - not actually with Harry
but with a very 'thick' Schnauzer that we had...
I can only suggest that you hang in there - it will get better - and yes they will turn to one another for comfort, they're brothers in arms against the world (at the moment!!!).
Oh, and try different treats - maybe some little pieces of boiled chicken breast? That should control the pooping, and cut down on your workload!! I truly wish you luck
Sally + Harry xx