when did you stop setting an alarm to wake up and feed during the night?

LO is only 10 days old but is already back up to birth weight and lets me know when he's hungry. tempted to stop setting the alarm at night. I've been setting it for 4 hrs between feedings at night and he usually wakes me up around 3 or 3.5 anyway, but am hoping there will be a glorious day where we make it to 4+ soon and don't want an alarm screwing that up!