by Francesco Marcaccio.
Thank you for your answer!
Unfortunatelly i can't try the console commands in the link you posted (i use a shared hosting service).
I've added a php.ini to my moodle directory (and all its sub-dir) with this line: max_execution_time 3600
But using phpinfo() command it's still at 60. I've checked the php.ini path in phpinfo and it's the one i edited with the line above. Maybe tomorrow i will call my hosting provider.