How to connect and trigger flows with separate time intervals

I've created segments for each product category we have and now want to start the following three (3) flow sequences for each segment that start when someone places an order for a product in a particular segment.

I'm struggling with which triggers to use for starting each flow and how to connect each flow when one ends and another begins. The three flow sequences look like this:

• From 0-30 days after order (the customer will receive a custom flow of 4 weekly emails)
  Trigger used, but uncertain if this is correct: Trigger → added to segment (product X) → Profile Filter: Placed order at least once since starting this flow 
   
• From 31-60 days after the order (the same customer will receive a custom flow of 2 weekly emails)
  Trigger used, but uncertain if this is correct: Trigger → added to segment (product X) → Profile Filter: Not sure which filter to use to transfer the user from the previous flow to this flow
   
• From 61 - 365 days after the order (the same customer will receive a custom flow of 1 weekly email)
  Apart from the time interval, I assume this would be the same trigger and filter as the previous flow above, or am I wrong?
  
  Thanks in advance for your help.