While writing regularly can certainly contribute to improvement, it's not an absolute requirement for everyone. The key is intentional and focused practice. Consistent writing helps you develop a routine, strengthens your writing muscles, and allows you to experiment with different styles and genres.
However, the quality of your writing practice matters more than sheer quantity. It's better to write thoughtfully, revise, and learn from your mistakes than to mindlessly produce content every day without reflection.
If writing every day feels overwhelming or becomes a chore, consider finding a balance that works for you. You might choose to write on specific days or set aside dedicated blocks of time each week for writing. The crucial aspect is to be consistent, purposeful, and open to learning from your experiences. Quality, thoughtful practice will contribute more to your improvement than sheer frequency.