I'm definitely not qualified to claim what's the right and wrong way of doing it but I've never dedicated even a single day solely on meditation in my life.
Usually I was kind of like "phew, I feel tired and stressed, time to lay down with eyes closed for a bit", and it all evolved naturally from there (similarly to the so-called power naps of 30 minutes).
So at least the key for my success in mediation was to treat it like a damage mitigation technique and nothing else. And for me that works very well.
It's certainly possible I was doing it wrong though, but even in one of those 12 day silent Vipassana retreats I never got that kind of clarity.