I would not fix a rabbit at all, it makes their personality too different. I breed rabbits so mine are never fixed, but I’ve had one that’s fixed and he would just hide in the back of his cage all day. Fixing them dose not really make them less aggressive, it just makes them more fearful. Some...
Some Holland lops don’t get the dwarf gene in which means they are not fat but actually just have a bigger bone structure. They are called normals. If it is a normal I would recommend just not showing it. But first make sure it’s not just over weight.