Walked it in June, after starting from Somport and taking the Invierno after Ponferrada. I thought the Gronze stages were too long, so I broke it up a lot. Do stay at the albergue in Villavieja (you need to contact them ahead of time to get the door code -- it's not staffed), even though that's not the end of that Gronze stage. It's wonderful! I stayed mostly in hostales/pensiones because I was worried about Covid risk. It's best to have a reservation, since they won't always be open or have anyone there if they don't have any, but there are options that are very expensive. The Invierno doesn't have the infrastructure of the main drag Camino, so you need to be more intentional about carrying food and water. Gronze will sometimes say there's a bar or restaurant or food market in a town, and they're not WRONG, but there's only one, and it may or may not be open. (And that was June.) I am very glad I did both that and the Aragonese route because the quieter stretches were a good mix with the more populous main drag.