Sleeping problems

Hello po. Ftm here. My 1 month old seems to be sleeping like less than 12 hours a day, ( i'vre read kelangan maka sleep sila 14 to 17 hours) and there are instances that he would fall asleep for 1 hour, then he'll be awake for a long time. Hindi ko tuloy alam kung dahil sa growth spurts or nagchange kasi ako ng milk (from Nan Optipro1 to Nan sensitive kasi super lungad sya) any advise po. Ty!