my 4 month baby is not sleeping today's it's been 7 hrs ...she took only 10-15 min nap in between this time ....should I consult doc or its ok in babies

A. Hai good evening !! Sleep pattern changes after 3-6 months as they develop milestones they explore ,observe surroundings ,engage in play ,wakes during day time than earlier days . Slowly engage baby in play by showing rattles,swing toys,clapping,talkimg,singing lullabies between naps and schedule nap timings day and night routine. But baby needs 13-18 hours sleep a day ,long gap between naps is not good. Good body massage before bath,tummy full feed induces sleep.