dropping feedings?

so my son is going to be a month old tomorrow up until the end of last week hes been on somewhat of a feeding schedule he would wake up to eat every three hours on his own. this past week hes been feeding a bit more often in the morning then regulates during the day. he drinks 3-4 ounces depending on if he still shows hunger signs like sucking or trying to eat his hands or going for my boobs. anyways other than eating a few more times during the day he started eating less at night instead of waking up at 2am and 5am he started waking up at 3am and 6am last night he didn't wake up at all only just recently at 5am. im not sure if this is okay since hes only a month old or if i should just wake him uo to feed. he didn't seem super hungry he drank 4 ounces but even then he stopped allot during the last ounce .