Trouble reversing baby's schedule?

Susan
Any advice on how to reverse your LO's schedule? Mine is now 7.5weeks and sleeps long stretches during the day (2-3 hours), but stays up fussy all night (only 30min naps after rocking her or bouncing her for an hour, then she cries and we repeat). She hates the swaddle and will only sleep in her rock & play. Help!