I have the Canvas Weave baby blanket all warped and threaded through the heddles as in the pattern. I am now confused as to how to thread the yarn through the reed. Is it the same as threaded through the heddles? TIA

I’m not sure what you’re asking except to ask if you are on rigid heddle.
If so, you don’t have a reed to sley since there is no reed because the rigid heddle behaves like both-heddle and reed-rom my brief experience with one. (Very fun btw- and was a gateway for me)

I am on a Schacht 45" Standard Loom. It has heddles to thread and then the reed to thread. I think I have it figured out. I thread the reed just like I threaded the heddles. Hopefully!