Try swapping one of your later coffees for rooibos or a gently spiced golden...

https://highstylife.com/whats-the-quickest-caffeine-free-drink-i-can-make-in-2-minutes/

Try swapping one of your later coffees for rooibos or a gently spiced golden milk. Both make a comforting afternoon drink, without adding another dose of caffeine to your day