Is there any way to overcome the 2083 characters limit using REST API GET request itself.
Technically I HttpGet will have issue if the URL length goes beyond 2000 characters. In that case, it's better to use HttpPost or redesign the URL schema.
Check here for pretty well explanation: https://boutell.com/newfaq/misc/urllength.html In Summary: The maximum length of a URL in Internet Explorer is 2,083 characters Firefox: 65,536 characters Safari:80,000 characters opera: 190,000 characters
You may require custom service to be written. Other than that I dont see any method. REST is the more capable when quering SharePoint even we think of other methods like CSOM or server side code.