Redirect user to paid course after free course expiration ?

Hello Team, We are running with an issue, So we are seeking help from the side. We started a free course for one of our paid course, but after the expiration of that free course when it says "Course Expired - click to renew" We need it to redirect to the paid course, So please help me how to get it done. Issue :- Created a free course for Paid Course for 3-5 Days, or what you can we are giving full course for free to the students after that they have to pay, So please guide us How to do that. Initially, We don't have any idea so we created new free course for 5 days validity but after that 5 days it asks for renewing it, It renews That's what we don't want. We want after expiration of the course student needs to redirect to the paid course, Or you can suggest us any alternate way to make the paid course free for initial 3-5 days then after that student will be asked for the price.