Conditioning in Poly & Non-TPE Relationship

Hi kinky folks of reddit! I'm here for a bit of advice solicitation and to hear how some of you might have handled this in your relationships.

My sub and I are in a long-term D/s relationship and we are also both in hierarchical poly relationships, with primary nesting partners.

Our play tends to be on the heavier, more non-con side of things, and our dates tend to be feral, primal and violent. Not a lot of planning, but a lot of spontaneous fear, objectification and degradation.

With all of that said, we want to explore ways to incorporate conditioning and behaviour modification into our relationship, but are having trouble figuring out how that would fit into a non-24/7 dynamic, when we both have primary partners.

Orgasm conditioning is pretty much off the table because her medication makes it very difficult. But other forms of body response manipulation and thought-pattern conditioning are on the table.

I'd love to hear about what, if anything, has worked for folks in similar situations. Obviously there's a lot of ymmv here, but any and all ideas and anecdotes would be appreciated.