Thank you, Sandra! That is what I ended up doing, and it worked!! I just kept it running even through the heddles and reed. But, yes, I did check it every time I advanced the warp.
This is amazing fun!!! I am so excited to be learning this. Jane is wonderful!
My next step is to rethread the loom to open it up. I think I have to cut it, but can't find it on the videos. Did Jane cut it, and where is the best place to do that?