i have in the last 12 months cut out caffeine altogether.I didn't realise that 140/90 was considered normal for a middle aged adult.
My 7 day average was 137/91 so pretty similar to that - its definitely moving in the right direction.
That has seen a remarkable decrease in my BP readings. My average at 50 year old and not fit is down to 120/69 so compared to last years average on caffeine at 130/73 it might be something to consider if you have not already.