Frank,
We're all brothers and losing any is hard. Not to in any way diminish your pain, but I thought about this when my mom died unexpectedly last year from undiagnosed cancer and was gone quickly, that it's not supposed to be easy. If saying good bye to those we love was EASY, we'd not need FAith...
Lean on that Faith. God will be there with you and cry with you and there will only be one set of footprints in the sand...HIS. He never tires of carrying us when we're in need.
Blessing to you, your family and to your brother as his time draws close. My heart goes out to you...