I wasn't aware of this, but aparently, since I'm 'Technically' new to OSM, it only allows me to edit a small number of changes in the begining to limit risk of vandalism. Which in all honesty is pretty fair. (error 429), hence why the 1-hour pauses between uploads. I wasn't aware of this, and since I've edited quite a bit on OGF using JOSM, I just went at my usual rate and mapped a fair bit before uploading. Even after simplifying everything, it still ended up being ~3k something nodes, which OSM servers didn't like. It all worked though, no errors, no warnings, no conflicts, I just needed to allow it to take three hours to upload and it split it into 3 changesets. I assume it was 1k limit but I'm not sure about the exact number. Some quick googling told me the limit increases once you've made a a significant number of edits