Okay, thank you for the clarification. Yes, even with a single female bunny, spaying is imperative. Females have an incredibly high risk (80-85%) of developing uterine/reproductive cancer if not spayed by age 3. I’m sure you’ve come across similar stats in your research. A vet will perform a full hysterectomy (uterus) and oophorectomy (ovaries) during the procedure. This will virtually eliminate the cancer risk, of course no baby buns, AND the hormones will be out of the equation. Then they’ll both be more “clear-headed” and we can move onto bonding.
If you need help with that when the time comes, you know where to find us. In the meantime, stick around and keep doing your research. I love the HRN article “Love Match”. Don’t have the link on me but google those terms. It’s a great article on bonding.
From your initial post, it sounds like you’re doing all the right things: neutral space, switching cages, etc… the only hiccup is the fact they are unspayed. So, once that’s squared away, you should be good! Spaying may also calm them down, make them easier to be around, for each other AND you, improve litter habits, etc…
Edited to add: Also, have they both had vet visits already? The reason why I asked if the baby was mis-sexed (assumed male turned out female) is because it’s very difficult to sex baby bunnies. Pet stores are especially bad at this. If a vet hasn’t confirmed the sex of the baby, I’d still be cautious with them together in any case.