What is the memory efficient approach to import a huge Excel with Laravel FastExcel package?

Question

I am using https://github.com/rap2hpoutre/fast-excel for importing many large Excel files in a loop.

But the memory is getting exhausted during the process.

Below is the error:

2020-08-20 15:16:28 Saved 13867 records from file '/Users/akshaylokur/Work/GitHub/my-app/storage/app/my_excel.xlsx'.
PHP Fatal error:  Allowed memory size of 134217728 bytes exhausted (tried to allocate 20480 bytes) in /Users/akshaylokur/Work/GitHub/my-app/vendor/laravel/framework/src/Illuminate/Database/Connection.php on line 338

And giving below code snippet:

foreach ($files as $fileName) {

 $objs = (new FastExcel)->import($fileName, function ($line) {
                return MyModel::create([
                    'col_a' => $line['col_a'],
                    'col_b' => $line['col_b'],
                      .
                      .
                      .
                      .
                 ]);
      });
}

Appreciate any clues, thanks