There's no "customary" in brewing, there's only "preferences" and you'll find that that runs the gamut. We get asked this 50 times a day, rather than re-invent the wheel, I pretty much sum everything up, all the arguments here, with all the links, to allow you to make up your own mind, as to what you want to try first. Because the only true way, rather than our opinions, is to try it over multiple batches, and figure out
what method you prefer.
Ultimately it is all about
your process as a brewer. All methods work, and all methods have the potential to make great beer.
https://www.homebrewtalk.com/f39/multiple-questions-about-secondary-fermentation-140978/#post1601829
The only thing that really matters is letting the beer reach it's final gravity, the rest is up to what you believe. .
Many of us believe our beer is better after a month in primary...I have judging scores on my beers that back me up in my reasons, plus the citations of Palmer, which are in the other links.Others have different experiences.
There's an old saying in brewing, "ask 10 brewers a question, and you will get 12 different answers."
You'll have to do your reading, and try it different ways, and come to your own process conclusions on your own.
Have fun exploring and coming to your own conclusions.
But there won't be any harm in leaving your beer alone til you get back, as long as it's not like 9 months or so.