Some babies will feed in their sleep and some just won't. You can just try and see if it works.
^^This. Dream feeding didn't 'work' for us - my DD just kept waking 3-4 hourly overnight. I just let her decide when to feed in the end b/c it made no difference in her sleeping for a longer stretch. Like MadB said, you can only try.

So you usually pick up bubs out of the cot asleep and attach them on & they feed then you put them back to bed and hope like crazy they sleep for a longer stretch! lol Usually the dreamfeed is between 10-11pm at night.