Has anyone successfully nap trained at 13 months?

LO is sleep trained for bed time and will sleep 10 hours straight, but naps are a struggle. I have a nanny during the week who rocks her to sleep and I’m still breastfeeding just to get her to nap on the weekends. We tried Ferber and CIO but she would cry the whole hour and we would end up having to rescue.

Typical WW at this point are 3.5/4/4