@David9307 A few different approaches you can choose from:
1. Keep updating your listing regularly, and move around the more season-appropriate photos to the top position to improve your visibility in search.
2. Manually edit the pricing to selectively discount the gaps you need to fill in your calendar.
3. List on multiple platforms to access other markets.
4. Accept that these fluctuations in demand are normal - it takes a full year to know how the arc of seasonality will affect your listing, and how dependent it will be on factors beyond your control (e.g. climate, economy, pandemic). Use the down time between bookings to do renovation and maintenance projects, share the home with friends and family who need a break, or take a well-earned break yourself.