DD2 is 2 weeks old, DD1 is 20 months. DH goes back to work this week and I am panicking over how I will cope with 2 of them. DD1 is interested in the new baby and likes to help wash/dress/change nappy etc, but also hits/scratches DD2 unpredictably - immediately following a gentle kiss for eg. We are keeping DD2 out of the way as much as possible, praising DD1 a lot for good behaviour, distracting her (which I will be able to do less of) and putting her down, saying no and briefly ignoring her etc when she attacks. It doesn't seem to make any difference, and I'm not sure how to manage it from here. Any tips?