In anticipation of the birth of my first child, I am trying to change my cycling routine, because I am certain I will have less time for 3-8 hour rides that I am used to on the weekends. Instead, I have started doing 2 1-hour interval sessions during the week in addition to a 3-hour ride. I do 3 6-minute hill climb intervals + 3 smaller intervals on one day (I am just following a local incline) and either pyramid intervals or 1-minute intervals on the other. My times have improved quite steadily (including on the longer rides), but yesterday I felt as if I had a lot of gas left in the tank (despite knocking 20 seconds off my PR for the climb at the first attempt). So should I add a third session and allow for better recovery or add more intervals to make each workout more taxing?