Sentence examples similar to since this week from inspiring English sources

The phrase "since this week" is grammatically correct and can be used in written English.
It is commonly used to indicate the starting point of an action or event that is ongoing. Example: I have been working on this project since this week and I'm already making good progress. In this example, the speaker is indicating that they started working on the project at the beginning of the current week and have been working on it continuously since then.