I have recently gone back part time after 9 months, so not quite the same situation as you. The first week was hard - I was not used to getting us both up and out in the mornings and found it very tiring, I missed my daughter and worried all day about how she was getting on at nursery (she was getting on absolutely fine!) and we all came down with the dreaded nursery bugs. But three weeks in its getting much easier and we are getting into our new routine. I loved maternity leave, but there are good things about work, like quiet lunchtimes to myself, being in the buzz of central London and of course money! Also I can see that my daughter gets a lot out of her nursery days so that's a big plus. So I am slowly finding the balance, I'm sure you will too. Good luck!