Yes, you can extend your term at any time during the rental and thus reduce your monthly rental price.
Here’s how it goes:
Click on the product in your customer account.
Select your desired term under "Minimum term" and click on "Extend".
Your new term starts with the next due monthly payment.
All your rent payments made so far will, of course, be credited to your purchase. A change to a shorter minimum term isn’t possible.
If the option “Extend” doesn’t appear in your profile, this is because you’ve already rented with a maximum minimum rental period or no other term is currently available.