By 2012, Eriksson's Lit teammates were no longer eligible for junior competition, but Eriksson was still eligible for junior championships. He skipped Team CK Granit-Gävle, consisting of Ludwig Grann, Erik Ölund, and Magnus Rudström, at the 2012 Swedish Junior Curling Championships with the aim of qualifying for the World Junior Curling Championship. Eriksson's team was undefeated until the finals, but there they came in second place to the team from Sundyberg skipped by his future teammate Rasmus Wranå, whose team won silver at the 2012 World Junior Curling Championships.