Sense restraint for the duration of each day, sutta reflection during the quiet times of day (not intensive intellectualism, just a relaxed reflection). Sense restraint in itself takes a lot of practice, but also sharpens your mind for meditation.
Then just plenty of practice: two hours a day, or about. In this case I don't think it need all be spent on your butt, but rather those two hours can be spent sitting, walking, washing the dishes, sweeping the floor, etc. Anything that is simple to which you can dedicate your attention as completely as you're able too.
I used to meditate at night, hoped up on tea - I'd spend some time meditating, some time cleaning the kitchen, some time walking back and forth, etc.. practice like this until you get where you think you want to be.
The thoughts I've expressed in the above post are carefully considered and offered in good faith.
And friendliness towards the world is happiness for him who is forbearing with living beings. -- Ud. 2:1
To his own ruin the fool gains knowledge, for it cleaves his head and destroys his innate goodness. -- Dhp 72