Ah, so yes it has only been a very short time!
Were any of the injuries bad enough to need medical attention? Have you had them both looked over for injuries you might not have noticed?
And yes, when a rabbit bows his head to request grooming, that is usually a dominant gesture. And then failing to groom usually means the other bun is not ready or willing to be submissive. But there can be a ton of back and forth, and often by the end of the bonding process it’s hard to tell who is dominant and who is submissive, so I usually try not to worry too much about it. They will come to some sort of agreement eventually. I’m half convinced my bunnies ALL think they are dominant. 🙂
So just to be clear, for now, they should not have any interactions. If you can separate them from view of each other (even with a blanket hung up on a pen wall), that’s great. Out of smelling range is even better, but I know that can be hard to do. Don’t do any litter box swapping or anything for now. Keep them totally separated for at least 4 weeks, but 6-8 might be better.
Then, you should do a period called “pre-bonding”, where they live side by side and you swap who is on what side every day or two. Be very sure that they cannot get to each other during this time (bunnies are really good at jumping over pen walls during this phase!). Also make sure they can’t nip noses through the fence, so either use a fine mesh along the barrier, or use a double wall with a 6 inch buffer. I like to do pre-bonding for at least a few weeks. Basically you want to see how they behave when you swap sides. Do they run around and seem on high alert, do they run the fence or grunt at each other, etc. Good signs are relaxing near each other, grooming themselves at the same time, eating at the same time.
Once you feel they are doing really well during pre-bonding, you can do actual dates in a very neutral space. The harder the bond, the more important the bonding space is. In your case, I would aim for a somewhat large area (like 2 x-pens or a small room), in a very neutral place (such as a room they have never been in, out of smelling range of their home areas). I used to live in a very small apartment and used my friend’s garage for bonding and it worked great. Start with short sessions, prevent fighting, aim to end on a good note. I find it’s very helpful to set very short time goals for early sessions when I think there might be fighting involved. So you could plan for 2 or 3 minutes. Even if they ignore each other, that’s fine! Then repeat, and slowly increase the time goals. When they come nose to nose, pet them both A LOT and swap scents. This will help them think they are being groomed and will start to rebuild some trust and positive association between them.
Ok I’ll stop there so as not to overwhelm you!
.
.
.
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.