I thought I'd share because this has helped us so much! Our 2 week old is cosleeping with us. When he was waking at all hours of the night is turn on my bedside lamp to change him or feed him (he still has latch problems so I need to see.)
This woke my SO who is back at work and on "light duty" during the week and our LO would stay up for 2-3 hours after waking!
I bought a BLUE PARTY BULB for my lamp. It casts a soft blue light and seems much more night-like. Baby goes right back to sleep after a feed or change and my SO almost never wake up unless baby cries!
It's been a great change for us! We are getting more sleep than expected and the baby goes back to sleep much faster!
Re: Tip for waking in the middle of the night!!