Forums - CanActivate guards on child routes run before parent Resolve finish

I'm trying to resolve data before navigating to children routes as i have to use that data in children guard. The issue is parent resolver, resolves data after the child guard is fired. Resolver takes long time to resolve data Oracle Data Guard

// app.module.ts
const appRoutes: Routes = [
  { path: 'login', component: LoginComponent },
  {
    path: '',
    component: SiteLayoutComponent,
    children: [
      { path: '', redirectTo: 'warehouse', pathMatch: 'full' },
      {
        path: 'warehouse',
        loadChildren: './warehouse/warehouse.module#WarehouseModule'
        // loadChildren: () => WarehouseModule
      }
    ],
    canActivate: [AuthGuard],
    resolve: {
      Site: SiteResolver // should be resolved before the guard is invoked.
    }
  },
  { path: '**', component: PageNotFoundComponent }
];

// warehouse.module.ts
const appRoutes: Routes = [

    { path: '', redirectTo: 'cash', pathMatch: 'full' },
    { path: 'cash', component: CashComponent, canActivate: [RouteGuard] // should be invoked after the parent resolver resloves th data }

];