Issue with Strategy management process

Dear AC Experts,

I would need your advice to provide a solution for below business scenario.

Business Scenario: Our client has 3 types’ customers as below.

1. Green-Simple collection process
2. Amber-Moderate Collection process
3. Red- Hard collection process

So, we defined 3 strategies as aforesaid and Green strategy has the following work items.

1. Dunning Reminder 1—This reminder will go on the day when strategy assigns to customer
2. Phone Call—This will be done by user after 2 days of sending the Dunning Reminder 1
3. Dunning Reminder 2—This reminder will go the 5^th day of completing the phone call (2^nd work item)

We do run strategy management process on every Monday at 5PM CET. So the 1