I can only begin to imagine how much you miss him, as I never lost a sibling who meant that much to me. My only sibling was a very abusive older brother. I didn't feel anything in particular when he died, but I have lost someone who was like a sister to me for 25 years. Still not the same as the loss of your dear brother.
I can promise you that even though you don't sense him near, he IS. It's the way of spirits; they stay close to their loved ones. He will always hear you when you speak to him or even if you only do it in your thoughts.
Wish I could say something that would take away your pain, but of course it doesn't work like that. I loved reading about your dear brother. Thanks so much again for sharing this story. 💜