[Fun fact, not a marketing comment haha]
This is great, Afoma Orji! I used to do the same until a little while ago (in the year 2020) when I found out about Mock Servers on Postman, which gets running in a few seconds. I was surprised at the ease of doing it and have been using it ever since. You should try it out. (Ref: learning.postman.com/docs/designing-and-developin…)
Fast forward to April '21: I was looking for a switch and co-incidentally, I joined Postman 🚀, in the same team that owns mock servers as a feature. So, now I'm using it and building it at the same time 😂