Download data from thredds.met.no

I am looking for ways to find my target index for lat lon in a dataset:

import netCDF4 as nc
nc_url = 'https://thredds.met.no/thredds/dodsC/fou-hi/mywavewam800c45mhf/mywavewam800_midtnorge.an.2022032618.nc'

dataset = nc.Dataset(nc_url)

There is 3D-matrix with dimensions time,lat,lon. However there is rotated lat and lons and how these relates to the matrix is hard to catch. Does someone have any experience with that ?