Force rows onto a new column in HTML (or javascript?) by setting a max of 5 rows per column - html-table

Question

On our website, we have a table with 5 rows and 3 columns.
https://www.bakashana.org/sponsor-a-young-woman
The table is in HTML. The problem is that when we get a new girl to sponsor, we put her at the beginning (top left of the table, the first column and row). This means I have to take the last row entry (picture) from each column and move it down to be the first row entry in the next column. This is a big hassle and takes lots of time.
I am looking for an easy solution which will allow me to simply add another girl's picture (row) at the beginning of the table, and have the table automatically force the rest of the rows to adjust (keeping only 5 rows in each column, and creating a new column if necessary to accommodate all the rows).
Thanks!
Site Code:
<table class="girlstable" style="background:transparent; vertical-align:top;">
<tr style="background:transparent;">
<td>[caption id="attachment_6483" align="aligncenter" width="100"]<img src="https://www.bakashana.org/wp-content/uploads/2019/11/highcompress-Christine-thumbnail-150x150.jpg" alt="christine zambia scholarship kasama" width="100%" height="100%" class="size-thumbnail wp-image-6483" /> Christine Mupeseni[/caption]</td><td>[caption id="attachment_6495" align="aligncenter" width="100"]<img src="https://www.bakashana.org/wp-content/uploads/2019/12/Joan-Chonto-Headshot-compressor.jpg" alt="Kasama sponsorship zambia" width="100%" height="100%" class="size-full wp-image-6495" /> Joan Chonto[/caption]</td><td>[caption id="attachment_6490" align="aligncenter" width="100"]<img src="https://www.bakashana.org/wp-content/uploads/2019/11/Catherine-Mwansa-headshot-compressor.jpg" alt="Sponsor young Zambian woman Catherine" width="100%" height="100%" class="size-full wp-image-6490" /> Catherine Mwansa[/caption]</td><td>[caption id="attachment_6486" align="aligncenter" width="100"]<img src="https://www.bakashana.org/wp-content/uploads/2019/11/highcompress-elizabeth-muma-thumbnail-150x150.jpg" alt="Elizabeth scholarship kasama" width="100%" height="100%" class="size-thumbnail wp-image-6486" /> Elizabeth Muma[/caption]
</td><td>[caption id="attachment_6498" align="aligncenter" width="100"]<img src="https://www.bakashana.org/wp-content/uploads/2019/12/Catherine-Chipanta-headshot-compressor.jpg" alt="girl child assistance catherine" width="100%" height="100%" class="size-full wp-image-6498" /> Catherine Chipanta[/caption]</td></tr>
<tr style="background:transparent;"><td>[caption id="attachment_3836" align="aligncenter" width="100%"]<img src="https://www.bakashana.org/wp-content/uploads/2018/09/Priscilla-Mulenga-150x150.jpg" alt="" width="100%" height="100%" class="size-thumbnail wp-image-3836" /> Priscilla Mulenga[/caption]</td><td>[caption id="attachment_3837" align="aligncenter" width="100%"]<img src="https://www.bakashana.org/wp-content/uploads/2018/09/Sara-Kanyantag-150x150.jpg" alt="" width="100%" height="100%" class="size-thumbnail wp-image-3837" /> Sara Kanyanta[/caption]</td><td>[caption id="attachment_3702" align="aligncenter" width="100%"]<img src="https://www.bakashana.org/wp-content/uploads/2018/02/Kasonde-Marvel-150x150.jpg" alt="" width="100%" height="100%" class="size-thumbnail wp-image-3702" /> Kasonde Marvel[/caption]</td><td>[caption id="attachment_4900" align="aligncenter" width="100%"]<img src="https://www.bakashana.org/wp-content/uploads/2019/03/Jane-Kampamba.jpg" alt="" width="100%" height="100%" class="size-full wp-image-4900" /> Jane Kampamba[/caption]</td><td>[caption id="attachment_4899" align="aligncenter" width="100%"]<img src="https://www.bakashana.org/wp-content/uploads/2019/03/lastage.jpg" alt="" width="100%" height="100%" class="size-full wp-image-4899" /> Lastage Musonda[/caption]</td>
</tr>
<tr>
<td>[caption id="attachment_3731" align="aligncenter" width="100%"]<img src="https://www.bakashana.org/wp-content/uploads/2018/02/Costance-Mulenga-150x150.jpg" alt="" width="100%" height="100%" class="size-thumbnail wp-image-3731" /> Constance Mulenga[/caption]</td><td>[caption id="attachment_3835" align="aligncenter" width="100%"]<img src="https://www.bakashana.org/wp-content/uploads/2018/09/Vanessa-Kapembwa-150x150.jpg" alt="" width="100%" height="100%" class="size-thumbnail wp-image-3835" /> Vanessa Kapembwa[/caption]</td><td>[caption id="attachment_3704" align="aligncenter" width="100%"]<img src="https://www.bakashana.org/wp-content/uploads/2018/02/Violet-Chilufya-150x150.jpg" alt="" width="100%" height="100%" class="size-thumbnail wp-image-3704" /> Violet Chilufya[/caption]</td><td>[caption id="attachment_3800" align="aligncenter" width="100%"]<img src="https://www.bakashana.org/wp-content/uploads/2018/06/Joyce-Chileshe-150x150.jpg" alt="" width="100%" height="100%" class="size-thumbnail wp-image-3800" /> Joyce Chileshe[/caption]</td><td>[caption id="attachment_3845" align="aligncenter" width="100%"]<img src="https://www.bakashana.org/wp-content/uploads/2018/09/Regina-150x150.jpg" alt="" width="100%" height="100%" class="size-thumbnail wp-image-3845" /> Regina Chokwe[/caption]</td>
</tr></table><hr />