If it's any consolation, I had a nasty RTA in 2018 that resulted in two broken neck vertebrae and fractured skull. By far the worst part was the frustration of being told to wait before getting back to being active again, it just dragged on foooorrreeeeevvvveeeerrrrrrrr! With hindsight, waiting and giving your body time to heal is by far the best option. Fitness can be recovered (not necessarily easily) but your body needs to repair first! I listened to my spine specialist and I think he was definitely more knowledgeable and experienced than me and gave good advice. By being fit and active you are at a massive advantage compared to the typical injury victim so with care and a prevailing wind you should make an excellent recovery and soon be wondering what all the fuss was about.
Keep your chin up, there will be times when the pain and discomfort seem too much, but even when your troubles have you awake at 3 or 4-o-clock in the morning there is always someone here on cyclechat you can talk to. Unfortunately it might be me working the nightshift...... but beggars can't be choosers