I used to drink coffee a lot but then I realized what kind of impact it had on my stomach and stopped. It actually made me feel sick as it's simply too acidic for me. Everyone handles it differently and for me it didn't work out. So I started with drinking matcha and feel much better.
I'm glad to hear that you found your solution too. Spearmint is great and tea from it is delicious! I drink a large cup of hot water in the morning :) so it's similar to what you do :)
Thank you for sharing and have a good day!