Sleep regression?

Angie

My son who usually sleeps 7pm-6:30am has been waking up every other night around midnight and 2am crying. Even after we calm him down he will refuse to go back to his crib. We normally put him down for his two naps and bedtime with no issues, he is calm and sleeps within 10-15 mins. Anyone have similar experience and advice? Hopefully this is just a phase