Breastfeeding while Smoking

To start, please just keep the negative comments to yourself. Im a new, FTM and the guilt from trying to decide is already hard enough. My LO is 1 month, im breastfeeding him, but exclusively pumping and supplementing with formula. I do 2oz formula, 2oz breastmilk in his bottles. I have been a cigarette smoker for a longggg time, quit when i was pregnant but recently started again from the stress of adjusting to being a sahm. I smoke no more than 5-10 cigs a day, honestly less than 10. I have read breastfeeding and smoking is still better than breastfeeding and giving him formula, but i still feel like maybe i should stop breastfeeding. I feel so guilty both ways, but am having such a hard time trying to quit smoking. I dont know what to do, im looking for POSITIVE opinions, and encouragement ladies😢