Repeating Templates based on due date


I run about 48 meetings a year. content is different for each, but the planning template is similar. Preparation begins roughly 4 months out. Process looks like a editorial calendar- but with a hard publish date.

Help info provides information about how to create and use templates- but nothing about capability. Will ASANA create a template that will work from deadline/ delivery date BACKWARD to create/assign tasks, and preserve dependencies and file links from the original? Second prize would be to be able to do it working forward from a start date- but nothing I can find online describes features and functions of templates. If we have to go assign dates manually to a list of 45-50 task for each of 4 deliverable conference meetings a month- that is a lot of manual data entry. Any help appreciated here before I invest a lot of time in Asana.