newborn reverse body clock

FirstatForty

My baby who will be 4 weeks old on Friday seems to have a reverse body clock. She sleeps like a log all day and then in the evening starting with her 6.30pm feed she becomes so alert. She doesn't sleep after that feed really, only maybe 30 mins which is then right before the next feed. Then throughout the night she takes a long time to go back to sleep and sleeps very light. At nighttime her eyes are wide awake and she is very alert, where as during the day I can't even keep her awake to do her tummy time and exercises, when I try she cries and fusses because she wants to sleep.

I know she is still so young, but I am trying to establish good sleeping habits from the start. I keep the lights dim at night, read her a bedtime story, keep the sunlight in during the day etc etc. It seems that she is just on her own schedule. My question is, should I really worry about this now, or will thing naturally change when she is closer to 8 weeks old?