Typically, you should switch to a new set of Invisalign aligners every one to two weeks, as directed by your dentist. Each set of aligners is designed to gradually shift your teeth into the desired position. Following the recommended timeline for changing aligners is crucial for the success of your treatment. Your orthodontist will provide specific instructions on when to switch to the next set of aligners based on your treatment plan. It's essential to adhere to these instructions diligently to ensure that your teeth move properly and efficiently toward their final alignment.