Is tummy time a must? My 4 week old hates it.

1-2 min is good for newborns starting at week 1. It's only a few moments that bub needs to do tummy time. It is important to stop plagiocephaly. You can do tummy time on you (at various degrees of incline) and elevate baby's chest (over a nursing pillow for example) to help acclimate them to being in a prone position. Much more pleasant for bub. Btw I have never heard of a baby who loves tummytime. :) You can find out more about tummy time here http://sg.theasianparent.com/tummy-time-for-baby-basics/