たら as a recommendation


The following sentence is taken from page three of the transcript of 進撃の巨人.
<https://docs.google.com/document/d/10cBh6DAcXgxOpwlmSFFb2oV06vgi4zRTIPhpYHUjsVA/edit>

でも 理由 も 無く 涙 が 出る なんて 、一度 おじさん に 見て もらったら？

I have learned, that creating the -tara form of a verb makes it conditional.
Similar to the english "if".

However in this sentence -tara stands at the end of a sentence instead of
connecting two. My translation would be: "But, about you cracking up tears
without a reason, you should have that checked by your father."

My two questions about this sentence: What information does the -tara give to
the reader? What information does the なんて give to the reader?

I havn't found it anywhere, therefore I am trying to set up a LingQ lessen
with the mp3 synchronised to the transscript:
<https://www.lingq.com/en/learn/ja/web/library/course/1255154>

