What are you currently doing for "discipline"?
What "crimes" are grounds for "discipline"?
I know it can be hard to talk about this for LOs this age. On one had they still seem so young that any discipline can feel like "too much". But on the other hand now is the time to establish boundaries and teach rules. It can be hard and I always feel like I'm too harsh or that DH is being too harsh (usually it's just removing to her room for a minute).
Just an FYI: I'm using quotes above because I know we all have different opinions and feelings on the topic. Please feel free to use whatever terms you use.