Neither of two would do any good , how can a plant be made more potent in 48 hours..
If anything stress her out , burn thc, never give the plant to push out new resin the night before cuz there was No night..
If the plant is a yeilder it will do so , if the genetics are good to great she will be dank , there is nothing you can do to change that...
Some forms of training , longer veg time and more light will help with overall yield , and chopping when ripe should give you the most potent bud...
Anything else is a myth , or someone did something to a already dank strain and thinks there from of growing did it..
Good Luck..