How can we take the next step?

My wife gave birth to our third kid a couple of weeks ago. Now she shows rising interest in sex again. However, I still may not yet enter her for medical reamisters.

Thus we started with foot and offense games. E.g. I will be licking her feet while she makes herself come. Yesterday she allowed me to lick her bare asshole for minutes. Afterwards she told me to wank off on her quite impressive butt and afterwards ordered me to lick up all my remains (which I, of course, willingly did). I have become very much hooked on these and similar games which we have regularly been playing since a couple of years now.

She has never really cuckolded me, but I wish for her to do so. In my opinion the time now is right to change our relationship. She has had her pussy reserved to me during the last ten years and has been a loving wife who gave me three youngren. From now on I want to serve her as a C2 cuckold. I would try hard to stay out of her and would love to see her get used to dicks bigger than mine and to beeing free in her choice of sexual partners.

I told her so, many times already. And I tell her, that now is the right moment to start denying me to regularly penetrate her. The moment is right because we don´t want any more kids, because it´s a great treat for a lady of three to go out with whoever while hubby takes care of the household, and because I had to stay abstinent during the last weeks anyhow.

She replies that she does like the idea of keeping me chaste for a couple of days. She enjoys this as a means to make me horny beyond limits and turn me into her mindless salivating whorshipper. In the past, she has been locking me away shorttime in a CB3000 and teasing me, even during the last weeks of her pregnancy as you can see on the pics I attached.

But she also answers to my suggestions that she still wouldn´t want to keep me in chastity for a longer period since she needs dick in her pussy and still does not want to include any other men.

- Has anyone experienced a similar situation?

- Would you agree that it´s a good time to change roles after the birth of a young?

- Do I have any reamisters to hope for her changing her mind and taking things further?

- What could I do to encourage her?

- Finally: Is there a word for the sexual practice of not beeing allowed to enter your wife, while you may still be allowed to wank off (so it´s not really chastity)?