Nurse to sleep then train to stay in crib? (16m)

My 16 month old was sleep trained at 4 months somewhat unsuccessfully - we got down to one night wake which was okay.

He’s gone back and forth between one wake (most common) and 0-3 wakes depending on what’s going on. Last summer I let him cry at night until he slept through but at some point with a sickness or teething we got back into habits.

Now he’s 16 months and I’m getting crushed with multiple wake ups a night after a few weeks of teething and sickness. I’d like to keep nursing him to sleep but then keep him in the crib with pacis to figure it out on his own.

Do I explain to him that we sleep at night and he’s going to sleep in his crib all night and then stop going in at the wake ups? This is what I’ve done in the past, does it work for anyone else?

Schedule is: 6:30-ish - awake -12:30 - nap time 2:30 (or when he wakes) - nap ends 7pm - asleep