My baby has been a fantastic sleeper and has gone 12hrs from around 8weeks waking at 6/6:30 having a bottle then going back to sleep for an hour. he is now 4.5month and is waking up at 5 regardless of what time he goes down, having a bottle and staying awake....Is this normal? Will it go back to how it was before? Any tips? I know in the grand scheme it isn’t that early but just curious to know others opinions