The THC content of any leaf not covered in thrichs is negligible... useless... u could take every fan leaf on a 5ft plant n run it thru a closed loop, prolly wouldn't extract enough to do one decent dab....
Only 'Sugar leaves" not fan leaves are worth considering to smoke.... but if u let the plant finish, harvest it properly, dry it n cure it.... WAY better plan...
trim the sugar leaves, dry them to dust dry level (just a paper bag works!) n turn them into oil... u can store it if u need to use multiple trims to run a batch