5 yearsHow long have you had your tortoise? It looks like an old injury that is causing the scutes to fall off due to new growth. I'm not am expert.
should i do coconut oil after the lights go off so she doesn’t get cooked lolEnsure regular warm shallow soaks for 30 mins in a high sided container. Check diet and ensure calcium is provide for good shell, bone, beak and claw growth. I would also give the shell a gentle run over with a soft toothbrush and wipe on some coconut oil on the top to help moisturise new growth and scutes. Enjoy