Hi Pony.
To begin, I’d like to be clear that the topic of intentional breeding is strictly prohibited on this forum site. Since you have plans to fix them soon, I felt okay approving this post, but both members and you should be aware that we shall not discuss breeding.
Generally, BB views “bonded” rabbits as rabbits who have been fixed and have gone through the bonding process, which can take months of prebonding, dates, supervised time, etc..
My recommendation would be complete separation until they are both fixed and have time to recover. From then, you would conduct the formal bonding process which you can find out more here: https://binkybunny.com/BUNNYINFO/tabid/53/CategoryID/9/PID/940/Default.aspx
Having fights now are both dangerous and also may impair the ability to bond them in the future, so I believe separation until the procedures is best.
I am not personally experienced with bonding. The above recommendations are based on what I’ve read and heard about here. I’m sure other members may echo the same advice, but give more detailed answers if you have specific questions.
The answers provided in this discussion are for general guideline purposes only. The information is not intended to diagnose or treat your pet. Seek the advice of your veterinarian or a qualified behaviorist.