I'm at my wits end with exhaustion. My baby is 4.5 months old and in the last week is so awake at night it is impossible to get him to sleep. He has always been a fairly decent night sleeper and has had a consistent bedtime routine since he was a couple of weeks old. But now he will wake up from 8:30 every couple of hours until about 1am at which point he will be so wide awake that he gets really upset when we try and get him back to sleep. It is like he genuinely thinks it is daytime and doesn't understand why we are putting him back to bed. I don't have a clue why this is happening all of a sudden and we are just exhausted :( I think he may be teething but I am 90% certain he isn't in pain as when we are trying to get him to sleep he is quite content. He just doesn't want to sleep. Any ideas?! Desperate mum here 😩😴