RB as much as want P to be with him always , as much as he want to take her forever in his arms, where he can protect her from the cruel world.
At the same time now he can see she feels restless (he can sense pregnancy sickness too taking a toll on her health) and already she feels suffocated in BB due to ex bothering her and she unable to concentrate on RB. Just like Swiss time. (He himself will create now more situations for her to feel more suffocated at BB in coming days and learn certain things on her own is another topic!)
He is a man who always thinks for long run. He knows there is really no point in taking her out of BB until she herself now ask him.
He uses a tactic for her. Always. Gives her space that she needed. He has build a comfort zone for her. She likes it a lot than anything. The reason she listens to him is mainly due to this reason cuz she hates nagging and cant handle stress.
He will enter that zone only when he feels she needed him.
The space. Giving her time to breath.
This is where ex failing since Swiss time, RB knows. Very well.
So best option he wud now prefer is leave her at BB until she comes running to him out of suffocation.
There will be really nothing loss on RB's part if he leaves her at BB for a while, cuz he will still always have control of her, in a good way, a protective one, ofcourse an authoritative one too which is needed for immature girl like P !