My wife and I are poly, but we're still new to it. I've had some toxic poly in the past (not with her).
My wife already has partners, but we haven't set boundaries, and I haven't figured out some really important things about myself and my needs and what I want out of polyamory yet... Everytime I think of the question - "what do I want out of polyamory", it's always "i want her to be happy and free, i dont want to stand in her way," but the unspoken part is "even if Im hurting."
Is it healthy to ask she hold off on getting too romantically/sexually involved with her new partners so we can set boundaries first?
Short answer: Of course, it is healthy to ask your partner to hold off or put things on pause if you are having a hard time. Boundaries are important at all stages of a relationship, and if you are encountering problems, it’s healthy to express these.
But on the flipside of that, you don’t want to feel like you are holding them back. Or to worry that they will resent us for holding them back. That can be just as painful, I know.
My advice here would be to sit down and try to figure out what you want from polyamory, separately from her. Saying “I want her to be happy and free” is great, but that’s about her, not you. What do *you* want from this situation? Are you struggling to find partners? Are you struggling to see her with other people? Are you fine with her dating other people but feel like you’re being ignored? You mention you’ve experienced toxic polyamory dynamics before, so I assume this could be playing into the current situation as well.
Work out what you need from polyamory, then set a Check In with your wife to discuss these and negotiate/agree on boundaries you might need to ensure you are both happy with what you are doing.