In a lot of cases, behavior DOES change, whether it be age, hormones, etc. He is still recovering, and hormones are still “floating around” which might explain the scratching you’re experiencing. Because he is still recovering a little, he may not flop as often, but when hormones settle down, most rabbits become more mellow, so it’s expected for him to still flop and be relaxed.

I agree with @Louiethebunny.   Hormones will still be floating around after the first few weeks after spay/neuter. Most (if not all) rabbits become more mellow after spay/neuter. Those activities that you described that your bunny did before the neuter, sound like relaxed activities, so he might still do them. My buns who were spayed about a month ago, have definitely become more mellow. I don’t have to wear gardening gloves when I go in their pen any more! 😉

He will become more mellow, but he probably won’t lose the things he loved to do.

I think your bun will go back to relaxing 9n your bed like he used too

It is a relaxed, comfy position that is not sexually driven. Old bunnies as well as young bunnies relax in that way.

The nearest couple of weeks after the neuter there is a lot going on in the rabbit body. As the others have said, there are still circulating hormones in the blood stream, but the levels are receding and the body and brain needs to adjust. It is not rare for newly neutered buns to go through a brief period of extra hormonal behavior with circling, honking and pee spraying.