Awake at 4am every night!

So my son weirdly enough started sleeping through the night at 3 weeks, so I have always been blessed. But ever since the beginning of 2020 he has been waking up at 4am for an extra bottle, which means he gets 6meals a day, even though he already gets more than recommended. My husband is not that affected by it as he can sleep instantly again. While I am lying awake for an hour after, being extremely overtired during the day and I work full time and I have the feeling I have been slacking because of it. Anyone has any tips? Is it normal for a baby to eat so much?