Try weening the kids over slowly.
Ive completly changed the holsehold diet and they have barely noticed.
I started by putting less mince in something like say nachos, and more veges to bulk it out. Eventually i put no mince in at all and they didnt notice until loud mouth husband said 'you cant call this nachos! theres no meat in it!'
I kept the menu the same, just changed the recipes. Also i tought them what they should or shouldnt be eating and trying to undo all the bad eating habits they learnt off me.
Often ill say 'You can have the milo or the cake, but not both' and let them make their own choice and also realize that you can have a little bit of bad food, but not all of it.
Its taken me 6 months, the first few being the hardest. After the first month or two the weight was just falling off to it gave me motivation to keep it up. Now i look a lot slimmer than i am and its just so exciting being able to do stuff i was never able to before!
The clothes are great! im loving it and cant wait to get to my goal weight!