The turbo burns a lot of oil also check for any leaks underneath the car before moving it you might have a loose oil pan plug or gasket or a bad rear main seal
I second the checking other parts for leaks. Once you have discovered that your engine ran low on oil it is something you need to watch. And it sounds like that is your plan. But also if you have been doing work on the cam and engine perhaps a gasket is not doing its job so you have a good leak going on someplace.The turbo burns a lot of oil also check for any leaks underneath the car before moving it you might have a loose oil pan plug or gasket or a bad rear main seal