I had a quick look at the .pdf of the PCB and it looks fairly simple.
KiCad can create a PCB project from a set of gerber files, and although the conversion is not perfect (a lot of info is missing in gerber files), it's still a lot better then a full manual re-creation.
There is a quite nice tutorial for doing this on the KiCad forum:
https://forum.kicad.info/t/reverse-engineering-kicad-project-from-gerber-files/30903I assume other EDA programs can do something similar and something in that direction seems your best option if you can't manage to do a direct conversion.