Up to or Past 1 year

Did any mommies breastfeed their baby to sleep up to or past a year? My son is 11 months and I still breastfeed him to sleep and co sleep with him, our pediatrician suggested before that it was time to sleep train him, but all you mommies know that is easier said than done. Just want to know I’m not the only mommy that still breastfeeds their baby to Sleep and lets them co sleep or did up to a year or so. Also how did it go for you? Did you just savor every moment as long as you could? Did it make sleep training a million x harder waiting longer?