I agree with not using string or bees wax, the consistency of that kind of wax when it cools down is generally too thick/stiff and unless constantly re-renewed it can dry out and become brittle in static applications.
It would be a shame to epoxy your bow into a 1-piece...the takedown feature is a key part of the handiness and resale value of the bow...but thats you're call.
If it were mine I'd do what worked on my last two sleeved takedowns when they squeaked a bit...make sure there are no splinters/ bumps/ high spots in the socket or on the male end (a light sanding with fine steel wool or fine sandpaper can help) then use a tiny amount of Vaseline applied sparingly on both pieces with a fingertip. VERY little is needed, just a thin film on the male end/edge (too much can collect dirt and may create a 'vacuum' in the socket, making the pieces harder to remove). Then work the pieces back and forth together until the noise stops and they slide easily. Once quiet you probably won't need to redo the socket treatment for awhile as the Vaseline not only lubes but discourages moisture and dryness, and cold doesn't seem to affect it much either. But take note, if you put Vaseline on you won't be able to epoxy the pieces together without THOROUGHLY cleaning off the Vaseline. Even a light film of it is pretty persistent.