For recovery, protein and sleep.
Your bigger problem is that simply selecting a TR plan doesn't mean you can keep up.
Athletes differ in their fitness coming into a training plan, what they respond to, tolerance of ramp rate, potential for improvement, power curve, required rest week frequency and so on.
And FTP (along with NP, TSS, TSB and other silly derivatives) is terrible indicator of anything other than test performance. Two riders with the same FTP can have vastly different endurance, load tolerance, VO2 max and so on. The list is too long to cover in a forum post. Athletes are more different than they are the same and the only way for you to discover what you need is to monitor how your body is responding to training, using tools such as the internal to external load ratio, cardiac drift, HR vs cardiac drift, etc.
ERG training fixed power under controlled conditions makes these measures even more reliable.
Use EF for performance and if it's improving then you are doing something right and also need to progress your training.
If cardiac is decreasing then endurance is improving so you need to increase duration.
If HR is down but drift is up then fatigue is present and also drift can also show accumulating fatigue and this can be proven easily by reproducing it.
Sorry if this is somewhat rough but I had to type it up quickly so I can catch my bus.
Good luck!