The nose of the Brooks is not going to change in shape too much- it's the sitbone area that will form to your sit bones.
Like Mimi, I ride with the nose tipped up a TINY bit from perfectly level. That lets me put more weight on my sitbones. Too much tip up on the nose though created too much girly bit mashing. Every teeny adjustment makes a difference. Give every adjustment a day or so to feel the difference.

If you lower your saddle too much your legs will stay too bent while riding and you will have knee pain.

Glad to hear you like the Brooks!