weight problem

so my princess was born last march by 2.4kg then second check up March 23 was 2.9kg, then last check up is april 4 was 3.3kg; just worried Kasi super dami nya magbf sa akin tho 5kg lng nadadagdag sa kanya, kahit more than 12oz naiinom nya 4x a day (sa bottle sya nainom, pinapump ko po bf ko) napansin ko din is nahaba lang sya. what should I do