How I can to load only specifics subsets of fonts?

If I start a new project and insert a text box with Edge Web Fonts, then are loaded all subsets of font: Bold (n7), Semibold (n6), Medium (n5), Regular (n4), etc. and thisslows down the loadingofthe website.

But if I only use one or two subsets (Bold and Light for example), how can I to specify only these subsets?

Thanks.

More info about Edge Web Fonts (in spanish):

http://www.apañados.es/tenemos-que-apanar/internet-tutoriales-y-trucos/331-como-utilizar-a dobe-edge-web-fonts-sitio-web.…