The first thing that burns oil is whether you have confirmed it or not. You can listen to what they say, check the oil level every day before starting the car, then test it again. the next day to see how many fewer there are. As long as the engine is running, the engine oil automatically has a loss. So-called oil burning means that the loss exceeds a certain range within a certain period of time. One day is enough to overhaul the engine, it is enough to replace the four components. When I fixed it, I still had a lot of time in a day, and it didn't take that long. Maybe they put you online.
It is basically impossible to replace the motor. You don't need to think about it. It will be good if it is repaired properly.