Child learning system for talking

My son is almost two. he babbles a lot but not a lot of words outside of mama dada. and he will not talk to you when you ask him to, just when he feels like it. We’re pretty traditional and don’t watch tv or anything, he just wants to play with doors cabinets cars outside and with the dogs. i was thinking of getting him a tablet with a learning system to help with this since it’s hard for me to spend extra time due to having a newborn. any recommendations on a system and a tablet that is very basic but supports a learning system? thank you