Baby sleeping more at 2 months

My baby had couple of days where she would sleep most of the time throughout day + night and then there would be days when my baby is mostly awake throughout the day. For couple of day but recently my baby is sleeping much more during the day out of nowhere, does anyone else’s baby do that or did? Is it normal? Baby is eating between 600-700ml a day and healthy weight gain however recently i had to wake my baby up from some naps just to feed her.

Should i worry?