LST During Flowering

As it says in the title ,,, is this possible and does it work..

I am currently 3 week into flowering..

The bottoms of my plants are not recieving light enough
??

i would not try it..too late in the game for this...this would only push your harvest date back 10 days or so and only stress the plant..i would cut the lower growth off and make clones and concentrate on the tops that do get enough light...good luck

I LST regularly deep into the flower stage with zero problems.
Really all you are doing is moving/bending colas to allow better light penetration.