Breastfeeding mother

My baby is 8 months old, upto 6 months I have done exclusive breastfeeding but nowadays I am feeding only from my right side breast, left side my baby is not latching properly also not sucking from 1 month so milk production has become less, actually it has been stopped am very much worried about this, now am feeding from only right breast, is this wrong ? kindly solve my problem, what should be done for this, please let me know please