Alright, I have two female mini lops and I cannot seem to get them to bond!!!

Clover, 9 months and spayed, was our first rabbit. She is pretty submissive towards us. Never bit me or thumped at us.

Clementine, 4 months and not spayed yet, is our second. She is also pretty submissive towards us. But has always been a little more stand off-ish.

They have been living side by side (three inches apart) for roughly 2 months now. After 6 weeks, they were laying close to each other and seemed to be getting on fine. They get fed at the same time, get their cages switched daily. We tried using stuffed animals with their scents. They are always friendly when they are in their cages!!
This is when we started bonding sessions in their neutral territory.

First session: Clover immediately attacked Clementine, cutting her ear open pretty badly. We took her to the vet, got everything checked out and our vet told us to continue bonding sessions (a long with some other advice).

Second session: The two ignored each other for the longest time, I pet the two and they wound up laying super close together. Things seemed pretty good, so I ended on that high note.

Third session: The two ignored each other again, until Clemmie demanded to be groomed and Clover refused. Then Clemmie started to attack Clover any time that she got the chance.

Fourth session: Clemmie continued to attack Clover, super aggressively. We separated them and now we are here

Please help!!!! We were planning on adding a male within the next year, but dont want to do that if these two cant bond!!! We feel so lost and like horrible rabbit owners