I don't "have" to have two cups. I am sure there are things you do I may consider wasting time. If I enjoy coffee and don't have anything all that pressing on the weekend, I sit and enjoy a little. I can function without it. I choose not to sometimes. I work hard at my job all week, and if stopping for a couple cups of coffee is a problem on the weekend, then it may be you that has the problem.
Some sit and take time with a large breakfast every day, mines under five minutes with oatmeal ,a fruit and yeah,maybe a coffee to go on the way out the door.
By the way, I am out of bed by 5:00 am every day,sometimes before that if other things need my attention. and up plenty late enough at night, so I don't think all my time is a "wastin"