Oh Kirsty I so could have written exaclty the same post as you. Lucie has gotten into the habit too, particularly after I co-slept when she had gastro also. Some nights she will stay in her cot, sometimes she ends up with us. And I always bring her back to our bed after her 5am bottle for an extra cuddle and sleep. I was beating myself up about it too, and wondering how we will cope when #2 comes, but after doing lots of thinking about it, I am ok if that's what happens for the moment, at least until my big belly pushes her out!