Guardiola's side suffered a damaging blow when they were held to a 2-2 draw by lowly Nottingham Forest in midweek.
Second-placed City are seven points behind Premier League leaders Arsenal, although they have a game in hand and host the Gunners in April.
City have bounced back from disappointing results countless times during Guardiola's glittering tenure.
The Spaniard expects them to do so again against Newcastle in the FA Cup fifth round on Saturday, but he conceded his expensively rebuilt team are still a work in progress.
"Normally, we react well. We have the ability to forget quick. We are not a complete team to compete; that is the reality. We are in the process of many changes," he said.
"But if we can learn quicker, still nothing is lost, we can arrive in the last month with the chances.
"But I'm pretty sure next season will be better. I don't have doubts about that."
Guardiola's reference to next season, the final year of his current contract, offers another indication he intends to remain at the Etihad Stadium.
There has been repeated speculation that he could leave this summer after a decade in charge, although he said in December that he wanted to stay.
The Newcastle tie doesn't kick off until 20:00 GMT, which is something Guardiola has mixed feelings about.
It allows extra recovery time after the Forest game but shortens preparation for Wednesday's Champions League last-16 first-leg trip to Real Madrid.
"Recovery is massively important. Rest, sleep, food, training, we know how to handle it," he said.
"Of course, when we arrive early at home, it's better than late for the recovery, but it is what it is.
"For here in England, it is more important what happens in the League Cup than Champions League games for English teams
"I don't ask for anything, and if we (have) to play at 8pm, we're going to play at 8pm."