Getting total number of rows displayed and add columns class

Hi,

Many thanks for this great plugin. What i'm trying to achieve is adding a dynamic style accourding the the amount of rows with content within the flexible field.

So if it get's 3 row layouts with content, then it will be adding "large-4" class, or if it get's 2, each one will get "large-6" class.

I tried it several times, and with this, i'm only getting a 1 1 1, but not the total or the sum. Also tried with count and so on, but probably i'm missing something.

Here is the code. But not sure if with this code i'm doing it in the long/dumb way:

 <?php while(has_sub_field('content_tabs_tab')):  ?>                                         
                                        <div class="columns no-pad (conditional class here)"> 


                                            <?php if(get_row_layout() == 'content_tabs_tab_textcolumn'):  ?>

                                                            <?php the_sub_field('content_tabs_tab_icolumn_text');  ?>


                                            <?php elseif(get_row_layout() == 'content_tabs_tab_imagecolumn'):  ?>

                                                                <?php $attachment = get_post( get_sub_field('content_tabs_tab_icolumn_image') );
                                                                $image_id = get_sub_field('content_tabs_tab_icolumn_image');
                                                                    $image = wp_get_attachment_image_src( $image_id, 'full' );
                                                                    $image_title = $attachment->post_title;

                                                                    echo '<img src="'. $image[0]. '" alt="'. $image_title .'" />';      
                                                                ?>

                                             <?php elseif(get_row_layout() == 'column_tabs_read_more'):  ?>

                                                            <?php if(get_sub_field('content_tabs_tabtirm_title')) { ?>
                                                                <h6><?php the_sub_field('content_tabs_tabtirm_title'); ?></h6> <?php } ?> 

                                                            <?php if(get_sub_field('content_tabs_tabtirm_content')) { ?>

                                                                <p><?php the_sub_field('content_tabs_tabtirm_content'); ?></p>

                                                            <?php } ?> <?php if(get_sub_field('content_tabs_tabtirm_link')) { ?>

                                                                <a class="more-btn" href="<?php the_sub_field('content_tabs_tabtirm_link') ?>">Learn More</a> 

                                                            <?php } ?>


                                                <?php endif; ?>
                                                </div>  



                                     <?php endwhile;  ?>

Thank you so much