I walked this route a couple of weeks ago. It was mostly straightforward, but not all junctions were clearly marked. Luckily I had a track marked on maps.me which was extremely helpful. I walked at the same time as forum member
@Undermanager, although we didn't walk together that much. He sent me a link to the track and I am sure if you asked him, he would do the same for you.
Although it hadn't rained much before I walked his section, some of the tracks were very, very wet and muddy and boggy with cow manure. Quite trying on long stretches and guaranteed to get your boots well and truly soaked. Hopefully it will have dried by the time you get there, but be aware. Couldn't have managed at all without walking poles.
The two stages of Friol and Sobrado were very pleasant. Staying in the monastery was a fabulous experience.
The next day from Sobrado, I took the alternative route from Boimorto to O Pedrouzo. I was surprised to see mojones all along this route, brand new and plenty of them. In the event I stopped reading the directions provided by
@notion900 and just followed the mojones. But that was probably a mistake. I realised too late that these markers were eventually taking a different route, directly towards Santiago along the N-634. By referring to the maps.me app I worked out a cut through directly into O Pedrouzo, but I ended up walking almost entirely 40 km on asphalt, 30+ on quiet country roads with very little traffic, but the last section along on a raised track alongside the busy N-634 was not at all pleasant. It was also extremely hot and there was virtually no shade.
Meanwhile
@Undermanager had taken a different route to Pedrouzo via some woodland tracks that emerged at Santa Irene.
I stopped at a bar just after hitting the N-634 and was told that the route with the new mojones from Boimorto had only been set up for the last three months. It would be good if anyone knew exactly where this route went and where it joined the CF.
At the risk of sounding like a stuck record, you can read my write up of these stages
here, stages 29-31. Lots of photos and elevation profiles.