Wonder weeks

Does anyone feel that their baby is following the wonder weeks a little differently? My 8 week old daughter was born 3 weeks early and so should technically be going through the 5 week leap atm - but I feel like she's going through the 8 week leap instead...

Also... anyone else reassured about their baby's fussiness when they read about the fussy periods in the book? I've been having a difficult week for naps with my daughter. She never really napped well during the day, but has been a lot crankier than before more recently... which is apparently all normal.