When you learn something new, your brain forms new connections, but these connections can be relatively weak and may fade by the next morning. However, there's a way to strengthen and make them enduring:

1. Avoid extended breaks between learning sessions;
2. Develop a daily practice habit to complete the course faster and maintain your motivation (and, of course, save money);
3. Periodically revisit the theory and review code samples to refresh your memory; A solid understanding of fundamental topics like OOP, SQL, and intermediate Python provides a strong foundation for forming new connections in your brain.

So, let's get started, and may the force be with you!