3 week look ahead including past due tasks

MGreenPKWY
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I created a row report from a Gannt schedule and I am I am trying to create a report that shows me the info below.
- Status is incomplete (is not equal to: Complete)
- Current Start is in the past (I need this to only be for the incomplete tasks)
- But also add tasks for the next 3 weeks.
I feel like I might be missing something in the filters to create this. Anyone have any idea what I can do to create this report to show tasks that are past due plus the tasks coming due in the next 3 weeks?
I've seen some posts mention helper columns but I don't know much about those at all. I thinking I may need a formula that basically asks if the date is past due but I'm unsure how to write that.
Here is a snippet of what I have so far but it isn't working out at all.