Baby rabbits will often get along with other rabbits easily due to the lack of hormones facilitating territorial aggression, dominance assertion, and mating urges– however, this does not mean that it is recommended to put baby rabbits together. Firstly, the likelihood of mis-sexing baby rabbits is high, so separation is needed to avoid accidental pregnancies. Secondly, the ‘baby bond’ is expected to be temporary, meaning that once the baby rabbit begins experiencing puberty, there is a good chance the baby bond will break and suddenly become chasing, nipping, and fighting. You can read more about the ‘baby bond’ phenomena here: https://rabbitsindoors.weebly.com/bonding-bunnies.html
I recommend keeping them separate from each other until both are one-month post spay/neuter. From there, you can begin the bonding process, which is outlined here: https://binkybunny.com/infocategory/bonding/
It is simply not safe to keep two baby rabbits together unsupervised, so taking time to establish two separate, large enclosure spaces now is recommended and will also be helpful once you begin bonding as well.
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.