Botox to shrink nose pores, how much, where and how deep? (Photo)

I’m 36 and I still get acne. My nose is an oily moonscape. Lasers/dermabrasion/etc aren’t going to help; these aren’t pits left over from hormonal teen-age, it’s ongoing. Vigorous cleansing makes the sebaceous glands go into overdrive, resulting in even more oil and inflammation. How many injections of botox, how many mm deep, with how many units each might give these glands some temporary rest? And where? I do not want to freeze any muscles. Thank you.