Anyone experience bonding a single rabbit into an already bonded pair?

Hi! Im looking for specific advice from people who have gone through this before, not just general bonding advice as I've done it before. So I have a pair (white 7 yo male, cinnamon 3 yo female) thats been bonded for a couple years. Earlier this year I adopted another single rabbit (black 1 yo female). They've all been sharing a bedroom in my house with an xpen to split the space, so are very used to seeing and smelling each other. I finally decided to start bonding them and its going okay so far like in the picture! Mostly positive, but I can't seem to progress from a bathtub size space without the females having problems. Often, it will be the male snuggling one while the other is alone instead of all together. And the single female won't share the litterbox with the other girl unless I put them together. Any tips on how to encourage their bonding? Or is it really just time and patience?

He turned into an angry egg

striking a pose for the camera

What is she annoyed about?

Rabbit's things

How did he get in there? And what is he doing??

Cera's vibes are contagious

Forbidden belly

Penny hanging out in the living room

Willow's suddenly interested in the carpet... any suggestions?

It took her three months to learn she apparently enjoys the taste of carpet. Not only am I worried about her ingesting it, but this is also a rental (granted the previous tenant's cat did numbers on it before we even set foot here). I have a snuffle mat and a rug I'm trying to redirect her to, as well as a little ball pit, but she just won't leave the carpet alone...

Double decker bun

Usagi Shima is Out!!!

I downloaded the new game, Usagi Shima, and let me tell you, it is adorable!!! If you enjoyed playing Neko Atsume, you will absolutely love this!!! It's available is the app store :3 btw this is not paid sponsoring, I just really love it and wanted to share the cuteness! Have a hoppy day :3