Update view with .onAppear() a good idea?

Good afternoon (o;

After two days learning Swift/SwiftUI I have a little app running that retrieves JSON data from our online shop with a TabView showing:

• Stats for today/week/month etc...
• Last 2000 orders in a List with a detailed view

I use the .onAppear() method to fetch the JSON for the orders list but also .refreshable to update it on demand:

			.refreshable {
				fetch.reload()
			}
			.onAppear {
				self.fetch.reload()
			}

But this has the side effect that when I open the order details view and go back, that the JSON is reloaded.

Is there a better approach to have the view initialized on startup? Or should I just add an init() method to the JSON fetching model which in turn calls reload()?

thanks in advance richard