Re: longer nights, I'd read that babies can only sleep that long once they weigh 5-6kgs (tummy can hold enough food to get them through) and pretty much to the day that she reached 5kgs, V started going 7 hours.
She feeds at 18:30ish, she naps for an hour or so, she has a bath at 20:30ish, I feed her at 21:00ish, she's asleep by 22:00ish (yeah, ok, we know it's a bit late) = she sleeps until 05:30ish. Done
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Urgh, hypo central over here - 2 big ones yesterday, so I was dead tired by about 19:00, then one at work this am. Bleurgh. Too busy to be tired!