It is too early to say that they have become stable, they play against outsiders and win, they need a real test of strength. Ispwich are 18th in the relegation zone, no wonder they won with such a defeat. Let's see what happens in a couple of matches and whether they keep this momentum going. A losing streak happens to any team, if they get through it, I'll be happy for them
Indeed, defeating Ispwich does not mean that the Man City team will be more stable because playing against a team at the bottom of the standings is not a benchmark. However, even so, this will be a moment for Man City to rise, and make no mistake, Man City is always like that every season entering the second half they will be consistent and slowly improve their position in the standings. If you look at the standings, catching Liverpool at the top of the standings will be impossible, but if Man City manages to finish in second or third place, it will also be an extraordinary revival for Man City.
Maybe the next proof, if they win against PSG in the UCL & win against Chelsea in the EPL. So February, is proof of Man City is still consistent or not. If Man City manages to get through it then it can be said that Man City has risen. But if they lose or draw just once, it means that Man City has not risen yet, Man City is still slumped.