SwiftUI sharing timer through views in navigation view

Question

I'm pretty new at SwiftUI. I would like to make an app that navigates through different views in a Navigation View and running a timer in background presenting the time on each of the views. The problem is when I navigate to a second level of navigation. When the timer is on, the app returns automatically to the previous navigation view. Here's is a screenshot video of what I mean: https://youtu.be/eXbK9jpluvk

Here is my code:

import SwiftUI

struct ContentView: View {

@State var timer = Timer.publish(every: 1,  on: .main, in: .common).autoconnect()
@State var seconds : Int = 0
@State var paused : Bool = true

var body: some View {
    
    
    VStack {
        Text("\(seconds)")
        Button(action: {
            paused.toggle()
        }) {
            Image(systemName: paused ? "play.fill" : "stop.fill")
        }
        NavigationLink(destination: FirstView( timerSeconds: $seconds, timerPaused: $paused)) {
            Text("Navigate 1")
        }.padding()
    }
    .onReceive(self.timer) { currentTime in
        if !paused {
            seconds = seconds + 1
            print(currentTime)
        }
    }
    .navigationViewStyle(.stack)
    
}

}

struct FirstView: View {

@Binding var timerSeconds : Int
@Binding var timerPaused : Bool

var body: some View {
    
        VStack {
            Text("First View")
            Text("\(timerSeconds)")
            Button(action: {
                timerPaused.toggle()
            }) {
                Image(systemName: timerPaused ? "play.fill" : "stop.fill")
            }
            NavigationLink(destination: SecondView(seconds: $timerSeconds)) {
                Text("Navigate 2")
            }
        }
    
}

}

struct SecondView: View {

@Binding var seconds : Int

var body: some View {
    Text("\(seconds)")
}

}

Any help will be welcome!! Thanks a lot