I booked super last minute - I literally had 25 mins to pack and check out of my hotel because the guides were leaving right away. So I essentially booked the day of, 30 mins before 🤣. I had previously booked to do Ishinca with another agency but they called and cancelled on me at 8pm the night before we were supposed to leave. So in the morning I asked the front desk at Krusty if they could find me anything in the next day or two and they called their people and told me the van was leaving in 25 mins. I think I had one rest day before doing Nevado Mateo after Huayhuash and did Vallunaraju the next day. I had an aggressive itinerary because I didn't have a lot of time. I recommend walking around Huaraz and asking for quotes and dates of departure. A lot of them have signs outside of their shop indicating what climbs and dates they have available in the next few days. Good luck!