Retrain for sleeping?

So we sleep trained my LO at 6 months. He was doing great. Put him in the crib for naps and bedtime and he would be able to fall asleep in his own. Lately, whenever we put him down, he screams and wants to be rocked to sleep, for naps usually so I gave in to rocking him cause I thought he was fussy cause he was teething. But past few days it's been for bedtime too. Reason we sleep trained was cause he had to be rocked to sleep and sometimes would wake up when we put him down and constant wakings.

Do you think me rocking him at nap time messed things up. Should we try sleep training all over