i think it depends on the type of baby you have. my #1 was textbook, and i just kept her up an hour later that first night (she was 5 months at the time) and she was fine. i'd bed you could do it with an angel baby too.
#2 is touchy and i'm going to bet we'll have to do it more slowly - probably in 20-30 increments. though he'll be 10 months at that point, so i may just try & adjust him in a couple days' time.
i think i always worry more than i need to, cause it always seems to end up fine! :wink: