Teeth ? In 6 months, 2 came out at the bottom, we didn't even notice t…

Teeth ? In 6 months, 2 came out at the bottom, we didn't even notice this, the child was as always calm and cheerful, noticed when the teeth already came out straight) Now for two weeks they are coming out on top, one has already protruded and the second is right on its way, it's awful, eternal tantrums when I am not nearby, when I am there, it's only sitting on the arms you can sit calmly otherwise crying, tears and so on, that's the question in the nipple can you put any fruit (what the baby eats) and freeze it and give it to gnaw for relief? And also with the teething ring (which has water inside