As a beginner, you should aim to practice the clarinet at least 20-30 minutes a day, 5-6 days a week. Consistent practice helps build muscle memory, improve breath control, and reinforce learning. It’s important to practice regularly rather than in long, infrequent sessions. As you progress, you can gradually increase practice time to 45 minutes to an hour daily, focusing on different aspects such as scales, tone exercises, and pieces.