I just wanted to share my experience with getting a hyperactive bunny to slow down in case someone needs it 
So my bunny is 6 months old and REALLY hyperactive and curious. He runs around and digs away on anything. He is free range and because of his personality he is pretty naughty which basically means that I have to run after him 24/7. He is like a small child that can’t be left alone. Got him neutered exactly one month ago but hasn’t helped in his behaviour AT ALL. He is pretty aggressive sometimes still. But that is another topic. 
I was trying to get some work done and study all morning but he kept being a nuisance and decided to dig on my bed nonstop. Couldn’t get him to stop doing it. After a couple hours of trying I just resented and accepted not getting any work done today. Then suddenly it dawned on me! Why wouldn’t I give him some natural remedies to calm him? I got him some dried fennel grains and dried chamomile and he devoured them. Then I put on some classical music and he immediately lay down. Thank goodness! Hope this helps 