It’s only been about 2 months since bambam died, and I think it’s likely that even with affection, you would still find yourself missing him terribly. It’s just that you’re grieving, and you want some comfort from them that they aren’t, or can’t, give. It’s really very understandable to miss the most affectionate bunny of all.
I felt something very similar after Spockie died. I found Samantha 9 months later, and to be honest was very disappointed by how different she was. Much more skittish, unable to be held, never climbed onto platforms or couches or chairs. Just so much less active, and growly not sweet. I was really surprised at how different a bunny’s personality can be. So I wouldn’t look to change them too much, but just accept how they are with you and stay around them as much as you can while they learn to be comfortable with you in their presence. Sammykins has eventually made it clear that she feels affection for me, gives my feet kisses, and wants me around. (She will come out for a lunch snack of pellets in her dish whenever I come in to have my own lunch, whether it’s noon or 2.) I realized that she was just so much more skittish and shy and quirky that I either accepted her that way or made a drastic change – like find a second bunny. So I know how much of a loss it feels like to let go of a really sweet bunny. But I still love her, and I know she loves me, and right now it is enough.
Try to let yourself miss bambam without feeling any guilt about caring more for him right now. And try to spend some time with each of the two others individually if you can so you can begin to bond with them separately and establish a unique relationship with each. It may be completely different, but ultimately it will be your little fur family and feel right.