I’ve made sure he can hop. He is a small bunny.
Yes, I've seen the photo but your bunny does not have enough room to hop several times across his cage. If he had permanent access to the pen, that would be fine. But you said he only gets 2 hours of time in there. The measurements of the hutch in your photo are well below the minimums for any size rabbit. The base is only 4.25 square feet and some of that is taken up by the ramp. (It's 3' x less than 1.5')
Please refer to the following link (1st post) for info on cage sizing:
https://www.rabbitsonline.net/threads/2019-cages-add-your-photo.93422/
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