@TracieandJason0 I have a 3 month calendar window, but I went through my whole calendar up until the end of next year and manually updated the pricing for peak periods: Xmas and NY 2018, Valentines, Easter and all UK holidays up to Xmas and NY 2019.
You can adjust the pricing of your days even if the days are blocked by your booking window- they’re blocked to give you control and prevent guests from booking, not to prevent you from managing your calendar.
Xmas and NY this year and Valentines 2019 became open to book at the prices I manually inputted earlier in the year with no issues!
Best wishes
Paul 🙂