14 month old still not talking

Kendra • First time mom to my baby boy, 06.04.19 💙

My son still only says mama, dada, and nan. And he will say mama for a few weeks and then go through a phase where he won’t say it for over a month (this has happened twice already). I’m constantly repeating certain words and sounds and reading and still nothing. He understand some commands, but I just have a bad gut feeling about his speech