For some people, the time they perceive it takes to chop up vegetables is a barrier for them to include enough each day. If this is you, perhaps keep a couple of bags of frozen vegetables in your freezer for days when you would like to save on prep time. Snap freezing retains nutrients well so frozen vegetables are still a great choice nutritionally, and they come already chopped for you. Or chop fresh veges and see how little time that actually takes! side to lunches and dinners over the next few days. Or a big batch of quinoa that you can add to a few meals.
If you struggle to make time to prepare a nutritious breakfast, you could portion out the ingredients for a green smoothie (such as some banana, spinach etc) and freeze into daily portions so that in the morning, all you need to do is throw one lot in the blender with some water, almond milk or coconut water and blend. Or you could make a chia pudding or overnight oats in the evenings and place them in the fridge so they’re ready to eat the next morning.