0.93IF over 30 miles is atypical for someone without long term training in TTs and the like. Sounds like your rides had a lot of anaerobic contribution. The NP/AP ratio is kind of a giveaway.
Your early ramp tests were likely skewed by anaerobic contribution as well. What you’re starting to see is your FTP based on your aerobic capacity.
Anaerobic capacity can be sharpened up and brought back to your previous state in a matter of weeks, and your capacity might be topped out anyway. Aerobic capacity takes years and you have a lot of room for growth. TR is targeting your aerobic capacity.
So don’t quit just yet.