Finishing a 4 week block doesn’t necessarily mean you will see any gain in FTP, especially not 2-3%. You’re riding the renewb gains right now and that can skew things a bit.
Many people say that they test high on a ramp test. If you are able to do it and work at that level then it may be fine for you. But this is also going to depend on what kind of workouts you are doing and in the TR world how deep into the workout levels you are.
For me a ramp test is going to be better than a 2x8 and a 20 minute test is going to be better than those two. The other option is a long format Kolie Moore test. That last one is the only one I care to do now. If you get your FTP dialed in then AI detect can be pretty good. Then obviously something like a 2x20 for confirmation mentioned above.
Since you are on a come back depending on the history of data that TR has for you AI may be less accurate until you build up some rides.
The other thing to consider is that when you bump your FTP your progress levels will drop, there are benefits to just ignoring FTP bumps for a bit and training through. I ran but ignored an AI FTP bump recently for this very reason.