In my case, i did a bit of preparation before like changing my meal time slowly. Like having my dinner as late a spossible like midnight. So now, I only have to make my last meal in the evening later. Then once you get busy with work, time passes and before i knew it, its ifhtar time. It is usual for me to skip lunch ---the only thing is the coffee and water in between. The main issue making it possible is the reason and your intention.