Mine was more severe than yours but was lifting up too, also the top under the bridge was delaminating, I took off the bridge, clean off glue residue under bridge and soundboard used I xacto knife made a couple suits and I injected titebond wood glue in the slits into the limitations, wiped off excess on the top and put a block on the area and clamped it down, waited a couple days and reglued the bridge on.