… @theoutside … yeah the good old polygon tables, shared many times but the original authors link disappeard. there is some “replica” Polygon Table
to find more stuff like this search for “subdivision modeling topology”
but as you maybe just want a fast way:
delete one ring to get a gap between the two edges.
add a few
the remaining holes:
if you do it with a few bridges and 318 against 215
use triangular as pattern / option for the fill command
(you can fill all holes at once by selecting one edge per hole)
only at those areas, where you adapt / sculpt / modify your object, you may want to clean up the triangles a bit, or introduce the stepping stucture from Kyle s post.
or just delete a few edges to get quads:
hope this helps - kind regards - tom