Am I doing enough?

[AcornsFalling]

I also have all 2s and under and I think that age group is good with mostly free play. I bring out art supplies for exploration and they are learning how to do stickers and stamps. We also do a circle time with mostly action songs and finger plays, and story time. The rest of the time is free play indoors or outdoors. I engage with all of them regularly to talk about what they are doing, teach vocabulary, how to use words to solve problems, and practice following instructions. It sounds to me like you are doing the same so I think you are doing great!
Also a huge and important part of what you are doing is teaching the children how to behave in a group environment, which should not be discounted as it is a very big adjustment for many children when they are first away from home.