Are we ready for baby #2?

So my husband and I have serious baby fever. Our daughter is 16 months old and we would like her to have sibling a little close to her age. We’re doing great financially and we’re stable. My heart is truly ready. The only thing keeping me back is that I’m taking online classes for my bachelor’s degree and I’ll graduate in 2021. I am so determined to get this degree and nothing will stop me. I’m just scared that with having two kids and school, I might be overwhelmed or have too much on my plate. My husband said that it might be hard in the beginning, but I’ll adjust like I always do. The fact that it is online classes makes it easier because I can work it around my schedule. I’m so torn between TTC or waiting. What do you think?