Overdrive for autos??

[Cong88]

Hi im growing an northern light auto theres about 2 weeks left till i start to flush im growing in coco/perlite and im using ghe flora nutes atm im giving the plant 2ml calmag,2m micro,0.5ml grow and 2.5ml bloom im about to cut out the calmag and grow and just use 2ml micro 4ml bloom per gallon ive got some some overdrive i want to use befor i do final flush but i dont no how to use it as its my first time growing how much per gallon for an auto and do i cut out bloom nutes if im using overdrive? I dont have a clue any advice is greatly appreciated