How often should I change what I am studying?
These answers restate the rules implemented by our open-source engine, which follows the WXF laws and is regression-tested against the official 110-diagram repetition casebook. Where an answer refers to a specific position, that position lives on the linked reference page, where the build verifies it against the engine before publishing.
Direct answer
Only when the evidence says to, not on a fixed schedule. If your training log shows a specific mistake has genuinely stopped recurring, it is time to move on. If you are switching focus every week out of boredom or restlessness, you are very likely abandoning progress just before it would have shown up.
Let the log decide
A training log exists precisely to answer this question: is the thing you targeted actually improving. Trust that record over a feeling that you have been doing the same drill for too long, since the feeling arrives well before real change does, which is exactly the trap described in how to get better at tactics.
The cost of switching too soon
Tactical pattern recognition in particular needs sustained repetition to become automatic. Stopping a few days before a pattern would have clicked and moving to something new resets progress that was close to paying off.
Related questions
Is variety within a study session useful?
Yes, mixing puzzle types within a session is fine. The question here is about switching your overall focus, not your daily variety.
What if a topic just feels boring?
Boredom with a drill you have not yet mastered is usually a sign to push through, not to switch away.