I am a little obsessed by this and have been doing it for a few years now. No weight loss, sadly, but without a doubt it has benefited all of us. I've done it long enough now I don't routinely count up but do random checks to make sure we are on track. My tips for how to make it easier:
Smoothies with frozen fruit and extras- dd is particularly challenging as she is fussy and has some intolerance. So at least once a week I make a smoothie with mixed frozen berries (count it as 4), oats, banana and flaxseed. I add some oat milk, apple.juice and water to get the right consistency.
Stir fries are brilliant to.up your numbers. I often buy one pack of a pre cit stir fry mix, choosing veg we dont routinely eat (eg I will choose the one with bamboo shoots, sprouts, pak choi etc). Then add sliced "regular" veg.
My "standard" veg for steaming or sauteeing has been increased. So before we had onions, broccoli, carrot and corn as standard. Now we always have those plus at least one type of cabbage, peppers etc.
Similarly, my "standard" salad is now more varied - bag of mixed leaves, cucumber, peppers, avocado, spring onion, nuts of some sort.... that's the most basic. I regularly add all kinds of extras like chargrilled veg0
Talking of nuts, i routinely have a bag of mixed nuts on the counter for snacking and we usually have at least one kind of nut in a meal every week - pine nuts in salad, almonds in a pilaf, walnuts or pecans in something I have baked etc.
Add things like lentils, pulses, beans to curious stews, casseroles, pasta sauces.
Consciously think about meal plans requiring different veg. So a curry with butternut and sugar snap peas and a cauliflower cheese in the same week, for example. Also plan for meals.from.different cuisines as it naturally adds more variety in spices and flavourings.
Make an effort with varied fruit for breakfast or packed lunch - this week we have strawberries, grapes, watermelon and pineapple plus our "standard" options of apples and bananas.