Yeah. My son picked up my recumbent when he was 14 as just rode off. I thrashed around for aweek. Next thing is you'll need is another bike.......
He got the balance within 30 minutes. However , it's becuase I insisted on following a method. It looks like if I had just let him, he would have been off and ridng in 15 minutes!
Anyway, once he was pedalling freely he said ".. Dad, it's just like the other (normal) bicycle .."
Back in 2012 when I was learning the MBB , it took me several attempts. It semed like hours of practice to get cornering right.