I want to make sure I understand adding a free trial

Could I please get someone knowledgeable to confirm that I understand things correctly?

I currently have an iOS app that has two subscription options: yearly or three months.

I want to add a free trial.

From reading the forums and the docs I think these are the steps I should take.  Are they correct? If they are correct then several assumption I made about how this works are incorrect.

1. Add an introductory offer to each of my two subscription options in App Store Connect.
2. Wait for the change to propagate.
3. Adjust my UI for users that’s aren’t subscribed based on what Purchases.shared.checkTrialOrIntroDiscountEligibility indicates. That lets me choose whether a free trial is mentioned or not.

I’m also thinking this would be a good time to throw out my paywall and start using RC’s paywall feature.

Thank you!