Over the last 40 days, I have been experimenting with my coffee intakes. Coffee was screwing up my sleep, that has been my conclusion.
I tried different beans and timings for consumption. The learning has been the quantity of beans in my glass has a direct result on my sleep.
I have restricted my consumption to 10 grams of coffee a day. I am sleeping at peace without any hiccups. Now I can have two glass with five grams of coffee in each at any time.
I have got a new glass and spoon for measuring beans before grinding them.
The effect of coffee quantity differs from people to people. I am lucky to have found my limit.