Request Timeout

i am trying to fetch products from the API through guzzleHttp client. there is almost 14204 products when i start fetching and saving into my database almost 6708 products will fetched but then i got request timeout error. my code will be like this in the controller function.

			public function syncproducts()
			{
$erpdata = Helper::geterpvalues();
$client = new Client();

$res = $client->get($erpdata->erp_api_link.'/products?limit=15000', [
    \GuzzleHttp\RequestOptions::HEADERS      => array(
        'debug'        => true,
        'Accept'       => 'application/json',
        'Content-Type' => 'application/json',
        'APIKEY' => $erpdata->erp_api_key
    )]);
if ($res->getStatusCode()==200) {
    $products = json_decode($res->getBody());
    if ($products->data) {
        // dd($products->data);
        foreach ($products->data as $product) {
            $categoryId = null;
            if ($product->Product->ProductCategory) {
                $categoryId = $product->Product->ProductCategory[0]->id;
            }
            //$matchThese = ['product_id'=>$product->Product->id];
            if (Product::where('product_id', '=', $product->Product->id)->where('product_code', '=', $product->Product->product_code)->count()== 0) {
                Product::Create(['product_id'=>$product->Product->id,'product_code'=>$product->Product->product_code]);
            }
        }

        $detail = [
            'message' => 'New Products is updated',
        ]; 

        $users = User::where('type', '=', 'Ship Owner')->get();
        Notification::send($users, new SyncProductNotification($detail));

        return redirect()->route('products.index')

            ->with('success', 'Data Synced Successfully');
    }
} else {
    return redirect()->route('products.index')
        ->with('destroy', 'There is an error in fetching data.');
        }

   }