You might question further why it doesn't feel right to prepare food for your kids right now. "Not feeling right" is really vague.
It would be beneficial, too, to examine your thoughts around eating and connection with
The Four Questions.
I'm surprised you won't eat with your family because it's unpleasant for you to watch them eat... you are choosing this diet, it seems like you could also choose to overlook the unpleasantness in order to connect with your family. Again - lots of thoughts to look at there, an opportunity to really clear out some old ways of thinking and believing.
I second the idea to hire someone to come make juices - why subject yourself to this tedious chore if you don't have to? I know you said making them yourself is part of the challenge. I'm also guessing you may be thinking lots of people who would try the juice feast might not choose to use their resources to pay someone to make juices for them, so your experience wouldn't extrapolate to very many people - but this is YOUR experiment! If you can, I say go for it. Think of what a sweet temporary job that would be for someone!