How to stop breastfeeding

My son is 9 months and I made a post the other day about him getting teeth and I’m worried he will bite me since he has already pulled on my nipple multiple times. He’s not wanting to nurse unless it’s in the middle of the night just for comfort. He would rather more solids. Yesterday he took only 10 oz. I have 135oz stashed at the moment. My supply is way down and I am over stressing about it. Another thing that is probably temporary...my left breast is significantly smaller than my right and it’s very noticeable and uncomfortable when I wear a bra. I feel like everyone notices it. Like I’m talking my right is a C or D and the left is an A or B. Is it even worth trying to load up on fenugreek and try and pump to get my supply back to where it was or should I just stop altogether? I don’t want to feel guilty. I am 3 months away from my 1 year goal. But it’s getting harder and harder on me when my son is fighting his bottles and the breast. Even fighting formula. How would I even stop and let it dry up in the first place?