I have a sample file here that is giving me trouble. I'm trying to figure out how to get these spiraling ribbed grooves down the side of this bottle and i'm not sure the best way to approach it.

I have created a helix, which produces a lot of points, and then moved the points to try to line up with the photo reference. then I plan to create a cross section of the groove shape which i will sweep along the helix. then i plan to boolean remove it from the bottle. Sound right?

my problem so far is I can't seem to project the helix onto the bottle so it hugs the contour of the bottle. I have been trying the trim tool.