Laravel 6 Global variable by reference

I've an application built in Laravel 6. This applications communicate with a VTiger CRM instance via an API.

I've create a model ApiClient, here's the constructor :

function __construct() {
        $this->endpointUrl=env("VTIGER_WS_URL");
        $this->userName=env("VTIGER_WS_USER");
        $this->userKey= env("VTIGER_WS_KEY");
        $this->token=env("VTIGER_WS_KEY");

        if (!$this->login()) {
            echo $this->errorMsg;
        }
    }

The login method its a curl to the api endpoint, that return me a sessionName, sessionsId and a key. After that, i can make calls to the api an pass those informations for the autorization.

I'm using the Service/Repository pattern to communicatate with VTiger, so i've create multiples services within my application. They all extends a BaseServiceProvider which is :

class BaseServiceProvider
{
    protected $apiClient;

    public function __construct()
    {
        $this->apiClient= new ApiClient();
    }
}

Everything was working fine until a start noticing that something a got some login failed on the API. Here's an exemple of one of my controller :

  class DemoController extends Controller

     protected $modelAService;
        protected $modelBService;
        protected $modelCService;
        protected $modelDService;       
        protected $modelEService;
    
        public function __construct(IModelAService $modelAService, IModelBService $modelBService, 
                                   IModelCService $modelCService, IModelDService $modelDService, 
                                   IModelEService $modelEService)
        {
            $this->modelAService= $modelAService;
            $this->modelBService= $modelBService;
            $this->modelCService= $modelCService;
            $this->modelDService= $modelDService;
            $this->modelEService= $modelEService;
    
        }

So im inject every service that i need within all of my controllers. So whenever i need a service, i can do : $model = $this->modelAService->get($id); and so on.

And in my service, i do :

public function get($id){
    $returnValue = $this->apiClient()->whateverFunctionimplentedForModelA($id);
}

The problem is each of my service create a new ApiClient() variable.

So if in my controller i have a function like this :

public function foo(Request $request) {
   $bar = $this->modelAService->whateverfunction($whateverParameter);
   $baz = $this->modelBService->whateverfunction($whateverParameter);
   $boo = $this->modelCService->whateverfunction($whateverParameter);
   $far = $this->modelDService->whateverfunction($whateverParameter);
   return whatever !!!
}

When i hit this function, there will be 4 ApiClient() model created, 4 login to the Vtiger API.

What i want to achieve is the only spawn 1 variable ApiClient(), which is created in my BaseServiceProvider , and then each time a service need to ask information to the Vtiger API, the service will access the ApiClient by reference instead of creating a new one each time

I know that i can achieve that with pure php like this exemple, that i use in the past with a connection to database :

$dbConn = new mysql_connection();

    public function getData()
    {
    	$this->dbConn->select(blabla...);
    }
    
    public function getDataFoo()
    {
    	$this->dbConn->select(blabla...);
    }
    
    public function getDataBar()
    {
    	$this->dbConn->select(blabla...);
    }

I dont know if its quite clear, but all i want is that all my services only use 1 variable I'm not quite sure if i can accomplished this with Laravel

Thanks you !