Has anytime sleep trained an older baby/toddler for naps?

My almost 11 mo falls asleep independently at bedtime but I was unsuccessful at teaching him to do the same for naps. I’ve been feeding him to sleep and rocking him since six months old. Something’s gotta give though and I plan to make some changes this summer when my husband can be home more (bc I can’t handle the crying by myself!!). I’m just looking for any mamas out there who had to sleep train an older baby...horror stories, success stories, how did it go? How long did it take? Especially for naps specifically. Tell me it’s possible!