Oh bless him, don’t worry, I’m sure all he needs is a bit of time. One of my bunnies can hold a terrible grudge and give me the silent treatment for weeks after a trip to the vet for a simple check-up.  Some bunnies can take a little longer to forgive and forget, but I’m sure he still loves you just as much. He may have been a bit freaked out by the neutering experience and needs time to settle + his hormones might be fluctuating after the op. If there’s one thing bunnies have taught be above all is patience. 4 days can seem a long time for us, but I think bunnies experience time a lot differently. For example, it’s taken me a month for my most recent rescue bunny to trust me enough to let me pet her (and that’s pretty good as I’ve heard some nervous buns take even longer!), so don’t worry. Maybe don’t try to pick him up so much (if possible) and try not to follow him if he runs away from you as he could just need some space while he recovers. Offer him his favourite treats and spend time with him like you’re already doing, but don’t try to pet him (basically pretend to ignore him as you read a book or watch TV) so he feels safe enough again. Good luck!

Male rabbits are also known to go through what is known as a “post neuter craze”. Basically, they get a bunch of hormones released into their system from the neuter. It is possible he is just being a grumpy, hormonal teenager Good news is that the hormones wear off, most people say it can take a month to 6 weeks.