Baby doesn't wanna feed but playful

Day 11 of my New born & he seems to be either sleeping or only very playful . He refuses to wake up from sleep for his feed every 3 hrs per paed suggest since he was hypoglycaemic at birth . Even if he wakes up, he plays simply kicking his hand n legs and stares all around . This happens once in every 3 feeds . Is it ok to leave him be without feeds . Worried abt his sugar levels . FYI formula & breast fed baby.