Robinho admits AC Milan cannot afford anymore slip ups in their battle for a top three finish.
Fiorentina are now right behind them in the race for a Champions League spot.
"Our objective is to play in the Champions League next season, so the next five games are decisive and to prepare as best we can, we need to work even harder," he told Milan Channel.
"We can't make any more mistakes, starting from the next home match against Catania. We must do even better, especially as we are playing in front of our home fans.
"I hope to be decisive for Milan, even if the team needs a contribution from everyone. I really care about the next five rounds, so hope I can reach 100 per cent of my physical and technical condition."