Its Amazon's Time Compression© story telling. They don't need to show how long things take as that would screw up their story.
The worst thing I noticed lately is that all those CGI shots of Numenor have big bridges to nowhere and houses in the side of cliffs.
Like WTF kind of city design is that? Look closely at some of those shots and you will see literal bridges that end in sheer cliff faces.
Not to mention the boats don't even look like they will fit underneath the bridges, while trying to make it seem they are so grand and massive.
Its ridiculous.
Next up is Numenor.
Keep in mind that there is no real agency for Galadriel in any of this. She just randomly gets bullied (why) then randomly is the only one who knows of Sauron (why) and randomly swims in the open ocean to be rescued on a raft and then randomly gets washed up at Numenor. So brave and stunning. Everything just moves along due to random events.