Ay oo, normal lang yan sa mga newborns, especially pag biglaan ang gulat! Ang startle reflex nila (or Moro reflex) talaga until around 3-4 months, kaya ang trembling ng mata at buong katawan ay expected pa lang sa ganitong edad, pero kung parang sobrang frequent pa rin or if you're concerned, better check with your pediatrician lang para ma-ease your mind, kasi every baby is different pa rin. A few of us moms noticed rin ito sa amin, but it went away as they got older, so most likely you're good! Pero pag may ibang signs na weird like hindi siya kumakain well or sleepy na sobra, tara na sa doc na para ma-assess.