How to Update a hyperlink in Navigation Menu Easily?

I am working on a website with around 30 to 40 pages, Now the issue I am facing is that in the navigation menu, there are pages such as HOME, ABOUT US, TRIPS

So now there are many pages in the TRIPS drop down which I update regularly with new pages, now whenever I update a new page I have to hyperlink and change it in all the pages(Like HOME and ABOUT US). Which is very time consuming, is there a easier way to do change hyperlink on all pages?