ok so ive come to the conclusion that i wont be defoling my last mex air unless i have to. but what i do is just take like 2 leaves off the one you wnna try it on to see how she reacts first. but what you will wanna do is if you CANT TUCK the leaf to move it out of the way from blocking your light to the branch/budsite (veg/flower) then i would remove it... i always try to tuck leaves when i can but when i cant i snip or pinch them about 1" from the base of the stem so that there isnt a wound by the main stem hence less chance for infection and such.. the plant will heal the end where you pinch and then it will usually consume it and fall off... now after you do this these 2 leaves for the test an she responds well to it/ it dont slow her down( yes some strains i have grown seemed to really benefit from defol! VIGOROUS GROWTH!
) then take off what you need up to like 4 leaves a day or so.. i spread defol out through a week to not stress the plant out much and it seems to work