My DD is nearly 3 weeks old. Last night she was very sleepy and didn't really want to wake for feeds, I woke her anyway twice and she had minimal amounts and fell straight asleep. In the morning she was still sleepy when she would usually be very awake, I rang 111 for advice and was sent to children's ward for assessment. All seemed fine, she fed well, pulse temp and blood pressure all ok etc. been discharged but DD is still very sleepy and is sleeping more than usual. Should I still be worried or is this a growth spurt?