" Since then, the ice loss has slowed down and the glacier’s front has partially recovered, readvancing by about 2 miles of the more than 4 miles it had initially ­retreated."
https://www.nasa.gov/feature/goddard/2017/two-decades-of-changes-in-helheim-glacier

That tells me things are getting colder, if the glacier is slower, but bigger.

In the end, the real data we have on temperatures, ice, glaciers etc., is almost insignificant in the grand scheme of things.