Weird night-time obsessions

[Anon171175]

My (nearly) 4yo has turned into a nightmare at bedtimes. A bit of background which may be related is that me and his dad separated about 6 months ago. He is generally totally fine with this and spends EOW there (with older DS). They have to share a bed though...
So, I take him to bed and I read him 2 stories but then we have this whole drama about 'tucking in'. I tuck him in as tight as humanly possible but he will ask me over and over again if he's tucked in. Then will ask me to do it again.

He also insist on being half way down the bed as he doesn't want the headboard to touch him!! He will also say "Am I far away from it?" over and over again. Once I've done this numerous times, he then insists on saying "night night" over and over again and if I dont say it back, he gets upset.
He can often wake several times per night wanting 'tucked in' even though he already is.
I've tried different duvets, sheets and blankets. He's not like this in any other bed than his own.
I don't know how to deal with this anymore as I find myself getting angry with him which really doesn't help either.

Just to add, there is no similar behaviour at any other time of the day, just bedtimes. He wasn't like this on holiday and isn't like this at his Dad's house either.

Its just a phase. He wants to be able to see you, make sure you're really there... and he wants to feel safe and secure.
You tucking him in repeatedly serves both purposes. Try gently introducing a new routine, say three tucks, two stories and four night nights - they love routines and easy to understand boundaries at his age...and don't get angry...you are his world at the moment. One day, he'll grow up.

Thanks! Yes I think you are right, its an excuse to keep me in the room as long as possible. He used to be happy going to bed but now complains he hates it. He was a little better last night. I was definitely calmer with him.