Adoption of Czechia
With the dissolution of Czechoslovakia in 1993, the Czech Ministry of Foreign Affairs and Ministry of Education, Youth and Sports recommended the use of the name Czechia. Other names proposed in the 1990s included Czechomoravia, Czechovia, Czechistan, and Czechlands. However, a short name has not been fully adopted by Czech authorities. In contrast to this lack of support, the British secretary for press and politics Giles Portman has shown a willingness to accept the name. Portman said: "Czechs still use the name Česká Republika rather than Česko, and the English equivalent, the Czech Republic, rather than Czechia. Were that pattern to change, we would have no problem at all with adapting accordingly. But we feel that the initiative for that change must come from the Czech side and not from us[.]"
In 2013, Czech president Miloš Zeman recommended the wider official use of Czechia, and on 14 April 2016, the country's political leadership agreed to make Czechia the official short name. The new name was approved by the Czech cabinet on 2 May 2016 and was published in the United Nations UNTERM and UNGEGN country name databases on 5 July 2016. On 23 September 2016, the Permanent Committee on Geographical Names began advising Britons to use the name Czechia. On 26 September 2016, the International Organization for Standardization included the short name Czechia in the official ISO 3166 country codes list.Google replaced the Czech Republic with Czechia on Google Maps on 19th January 2017.
I would change it. If it's never used, the short name will never catch on