That's no surprise to me that you say that. It's common in my clients for one person to want to lead the change while the others resist. It can be a challenge and cause you to give in and just continue with the traditional way of meals to please them but there are creative ways to get them on board.
Grocery shopping is a hugeeee step. I know it can be difficult but I actually advice people to clear out the stuff they are trying to knock out of their diets and donate it or give it to friends and family. If it's there, chances are you'll eat it.
Learning what to buy and how to prepare it takes time. If there's anything you need help with, feel free to reach out. I can help walk you through it :)
Begin by just making meals and presenting them to the family as usual....when they say "wow, that's delicious" Smile and thank them. Don't tell them they are eating "vegan" and you will be surprised I promise :) If your kidlets don't help you prepare meals yet, encourage them too...they will be proud of "their meal" and will be proud of themselves.
We don't label our diet but eat mostly plant-based with meat on Sundays. My children 5 children aged 15-8 never really noticed the change as they aren't fussy eaters. I have found some of my children opt out of meat on meat Sunday because they say they don't like the taste and texture of meat now.
My grocery bill for a family of 7 more than halved now.