Hi there,
There is no one formula for bonding, so it is important to read your buns behavior and only progress when they are ready. I think you might have gone a bit too fast in the beginning, and it was definitely premature to leave them all day.
I think first take a deep breath, and try calm down a bit about the situation. Things sounds fairly normal honestly, as it usually takes at least a few weeks on average to bond, so needing them to be bonded in just a week is putting a lot of pressure on yourself and the bunnies. I’ve bonded three pairs, and they’ve taken from 6 weeks to 4 months, so 1 week is very fast in my mind! From the forums, I would say about 3 weeks is the minimum for most people. (Imagine a stranger showed up in your house, and you were expected to marry them in a week? You might be a bit upset about the situation!)
I’ve found that whenever I urgently need the buns to be bonded, I have issues. So, I encourage you to reassess your expectations, and your set up, so you don’t feel rushed and put unrealistic pressure on them.
I totally understand that housing two buns can be very complicated (I have a studio apartment!), so I recommend improving their set-up somehow so you aren’t so rushed. I used NIC cubes to make temporary little condos for my two, and then a couple x-pens to divide the room in half with a buffer for when it was exercise time. Then once they were bonded I reconfigured the cubes to make one large condo for them.
When one bun is pretty shy, it can also be really important to let that bun settle in to your home for a week or more, and then to do pre-bonding (cage swaps, where they buns live side by side and swap who is on what side every day or two). This lets the buns get used to each other for a bit before you launch into bonding.
Since they started off pretty good, and are getting a bit worse, I would take a wee break and do some pre-bonding and get their set-ups arranged in a way that is less stressful for you. That way you won’t feel so stressed and pressured about the whole process.
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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.