This has also been my biggest gripe with Gemini 2.5 Pro. While it is fantastic at one-shotting major new features, when wanting to make smaller iterative changes, it always does big refactors at the same time. I haven't found a way to change that behavior through changes in my prompts.
Claude 3.7 Sonnet is much more restrained and does smaller changes.
Claude 3.7 Sonnet is much more restrained and does smaller changes.