I think what's helping Doku is the team/ Guardiola evolving. The team is settled, there's no in, then out with Guardiola's overthinking/ tinkering. That's not a sleight on Guardiola, that's down to the 'Yes Men' he had previously, in that his new coaches are willingly to challenge that thinking and it's bringing unexpected benefits. I think you can see this in Guardiola's own self realisation that he overthinks and, thus, affecting players like Doku.
Anyway, not to steer off topic, the reason why I came here; to note the very recent Internet love-in...