Prob 1-2 weeks left, will it make a huge difference to yield if potassium deficiency now

So I’m coming up 11 weeks flowering, couple of the plants are showing signs of nute issues, I’m growing in soil ph 6.5, have been watering with Epsom salts & molasses for a week. Signs have been there for a good 2-3 weeks, I’m so close to chop I’m not sure if it’s worth blasting them with whatever or just leave them be, only 1-2 weeks left SURELY!! lol

 

i'd give them a very light feeding of regular nutes, and then ride it out. look pretty close to done to me.

 

difficult to see with the flash, not sure 1-2 weeks will finish them