'The Beast' struggled to make an impact during the first half of his season-long loan at Emirates Stadium but came alive in the Carling Cup with a four-goal salvo at Anfield and a vital double at White Hart Lane.
Baptista scored just once in 14 appearances after his exploits against Liverpool and Tottenham but came off the bench to slide home the third goal against Manchester City on Tuesday. Gilberto expects his compatriot to continue in that vein.
"After a few games he played he did so well, especially if you look back at Liverpool in the Carling Cup and some other games," said Gilberto.
"He's been dropped to the bench since then and I think he gets upset about that. But he's an important player for us.
"The last few weeks I think have been so hard for all of us because we tried to lift ourselves. I'm really confident he'll come back to his best because we need everyone at their best at the moment.
"If we miss one player, if one of them gets down it becomes even harder for us. It's important we keep together and that's the main thing, the main key for us."
Copyright 2017 The Arsenal Football Club plc. Permission to use quotations from this article is granted subject to appropriate credit being given to www.arsenal.com as the source