The 26-year-old had 90 minutes in Croatia's 1-0 win over Macedonia on Friday evening and played the full game as his team drew 1-1 in Belgium on Monday.
"I'm feeling better and better," the diminutive playmaker told Sky Sports News.
"Of course it was a bit difficult for me playing two games in four days, both 90 minutes.
"But I think I managed to get out of the game well and we get two good games (and) four points.
"That is what we expected and it was good. Job done."