Here is what I ended up with, I error out after 3 hours and send out an alert to my email if it fails.

    my $terminal_failure = 0;
    while (1) {

        #  Get page 
        my $response = $ua->post( $page, \%form );
            
        if ($response->is_success) {
            $data = $response->content; 
            last;
        }

        sleep 100;
        $terminal_failure++;

        #  Die if no data for 3 hours send email alert.
        if ( $terminal_failure == 108 ) {

            my $failure = $response->status_line;
            
            my $msg = MIME::Lite->new(
                          From    =>'me@alerter.com',
                          To      =>'my@email.com
                          Subject =>"",
                          Data    => "HTML download fail: $failure" );
            $msg->send;
        
            die $failure;

        }

    }
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