Importing multiple GLTF files using Three.js - import

Question

I am trying to import multiple GLTF files into my Three.js scene using a LoadingManager, but I am encountering an issue where I can't access the properties of the loaded models. The code seems to be working since I have them loaded correctly. I have stored the loaded models in an object called "loadedModels" but when I try to access them, it gives me an error "Cannot read properties of undefined."
This is my current code. As I said, it loads the files correctly but when I try, for instance, to change each model's coordinates I get the error described before. I tried to put the forEach function inside a setTimeout to check if the problem was that the models were not loading fast enough for me to access it, but that didn't work.
//create the toLoad const where I will type each file url
const toLoad = [
{name: 'monkey', group: new THREE.Group(), url: '3D/monkey.gltf'},
{name: 'plane', group: new THREE.Group(), url: '3D/plane.gltf'}
]
//Create empty object to store the loaded models
const loadedModels = {};
//Create a loadingManager for progress bar
const loadingManager = new THREE.LoadingManager(() => {});
//Create loader loop from multiple local urls
const gltfLoader = new GLTFLoader(loadingManager);
toLoad.forEach(item=>{
gltfLoader.load(item.url, (model)=>{
item.group.add(model.scene);
scene.add(item.group);
loadedModels[item.name] = item.group;
});
});