My kids actually like vegetables 👀.. I’ve never had to force veggies lol. BUT I always sneak some into smoothies .. cause it just makes them better. Start simple.. some berries, pineapple maybe then some greens (spinach) throw some Greek yogurt in there for protein and then either a banana for sweetness or honey or even a splash of orange juice.. if you can’t stomach a banana. Greens are where it’s at anyways.. lots of nutritional value.. plus you can add a ton to a smoothie and never taste them 😉