I have found AMEX and Citi to be good about approving soft pull credit limit increases. I request them every 6 months. However, I have been unsuccessful in getting Citi to reduce my APR. Hopefully you have better luck!
Congrats on your Citi DC CLI🎉👍
Great job with the CLIs and growth your first year. Also thanks for the data points to go along with your account. Your spend of roughly your limit the first year is a good benchmark.