I’ll repast this here from the post I linked because it seems to either have been missed, or disregarded;
Your body might be telling you no pain, but if your medical team which YOU trust in their experience and skill is telling you not to do something, listen to them. Recovery is a marathon, not a sprint, and rushing it can only increase the odds of a setback, or further injury/damage to nerves.
My opinion, not that its worth much; instead of focusing on a goal race, set a process goal of what you want to follow and simply see where you end up by the time your races come around. Maybe you race, maybe you don’t, but you do all your PT, all your stretching, all your rehab to 100% of your abilities, and you don’t compromise the health of your back in the process just to participate in some amateur bike race.