I haven’t seen the M39-M39 helicals, will have to look into those...
Here is the exact setup I use for all adapted lenses, the close focusing adapter is quite inexpensive but well made.
The photo below is specifically a Kipon Pentax K to Leica M adapter, attached to the Leica M to Fuji close focusing adapter
I'm now using this double adapter setup for all vintage lenses, so far I use it with the following adapters:
C/Y to Leica M
Pentax K to Leica M
Konica AR to Leica M
Nikon F to Leica M
Leica Thread Mount to Leica M (the usual LTM adapter)
Nikon RF to Leica M
And of course, Leica M which is just the close-focusing helical by itself.
(1) first adapt the lens to Leica M
(2) use a close-focusing helical adapter
from Leica M to whatever your digital is, in this case Fuji, but the same concept works with Sony, and I assume Nikon/Canon.
Many vintage lenses don't have min focusing distance that is all that close, for example the Contax/Yashica 45/2.8 Tessar only focuses to 0.6m which is kinda blah for a normal focal length.
Or the Nikkor 105/2.5 F-mount early Sonnar-type, which only focuses to 1.2m
This allows every lens to focus close.
Wides and normals will get closer than teles.
It should work well using the $65 Kiev helical posted above. Interestingly, Amedeo originally built his adapters with donor Kiev helicals, until he designed his own, which is a true work of art.