Stripe Subscription - Continuity of the Trial

When signing up, my user is automatically subscribed to a plan with a 30 days trial. My issue is that if the user decide to subscribe to a cheaper plan before the end of his trial, he losts his trial period.
To do this, I’d need to pass this parameter https://stripe.com/docs/api#update_subscription-trial_end
@emmanuel Would it be possible to add this ?

Can you email support for this, I’ll check.