'timely change' is correct and usable in written English.
You can use it to describe a changed situation that happened or was implemented when it was needed or at an opportune moment. Example sentence: Our decision to adjust our product line was a timely change.
One of my friends (a rare dissenter) said she thought it was about time our school made this timely change, that she had found it disconcerting to see one of her daughters talking and eating cake with a "stranger" (another parent).
Added Oyelowo: "The Academy is an institution in which they all say radical and timely change cannot happen quickly.
It's a timely change for Microsoft's corporate identity.
Additionally, the protease-mediated drug release could ensure that MTX timely change its role from targeting (via FA receptor-mediated endocytosis) to anticancer (inhibit DHFR activity and stop FA cycle).
It's a timely change, given Instagram is considered the most harmful social network for the average 14-24 year olds' mental health.
Workers had to wait for up to two months to receive their checks, because the Employment Development Department couldn't make timely changes to its computer systems.
When the state or location of any appliance in the physical environment changes, the virtual context can enact timely changes, accordingly.
Different characteristic values for the spray morphology and behavior were studied for their suitability to describe timely changes and their effect on spray results.
Throughout our email discussion, the group wouldn't answer any questions that remotely touched on a spoiler, but they did reveal, among other things, that the credits underwent some timely changes to include images of a helicopter and a graveyard, additions meant to reflect storylines this season.
Etiologic transitions like these require timely changes in treatment and intervention strategies.
Similarly, timely changes in dialysis prescription may decrease the likelihood for extra-cellular fluid overload, which may prevent future hospitalization.
