What is that so many SMs get upset that a child god forbid wants to phone their other parent when they are with the other one.
it is not natural to stop all contact for x days with a parent because they are separated.
I do get it can be annoying - EX now phones DCs morning and evening, it gets a bit wearing but seriously theyc aht to him, up date him on school, talk Star Wars, football matches etc -that is more normal than this - my time /no contact / do not mention your mother/father exists, think abut her etc that so many people on here advocate.
YOu do nto stop ebing a parent because your child is with their other parent, likewise a child does not stop thinking abut a parent because they are not with them.
YOur DC is quite clearly telling you - he is insecure, he wants his Dad and not you, your animosity whether you realise it or not - is being picked up on. I would not agree to the bed thing but the rest is normal
I also agree 4 yrs, 2 yr old twins is alot of change in a short space of time. There is no wedge, you are making it - he is pushing as kids always do and this has nothing to do with his mother. Does he have his own space in your house or has that changed with the twins arrival on the scene.
His behaviour is teling you both that he is unsettled -figure it out and reassure him