improve premium requests lesson

Author: calebwilson706

tutorial/lessons/19-billing-and-premium-requests.md

@@ -43,15 +43,6 @@ Your plan includes a fixed number of premium requests per user per month. They r
 
 Once your allowance runs out, you can still use Copilot with the included models for the rest of the month. **Organisations can enable overage**, so if you exceed your allowance, additional premium requests will be billed per use rather than blocked.
 
-### Premium request SKUs
-
-Usage is split across two SKUs for budget visibility:
-
-| SKU | Covers |
-|-----|--------|
-| **Copilot premium requests** | Chat (IDE + CLI), Code Review, Extensions |
-| **Copilot coding agent premium requests** | Coding agent sessions and steering comments |
-
 ### Monitoring your usage
 
 Track usage in:
@@ -69,7 +60,7 @@ For full details, see [Monitoring your GitHub Copilot usage and entitlements](ht
 1. Open your [Copilot settings](https://github.com/settings/copilot) on GitHub and check your current premium request usage and remaining allowance.
 2. Run `/model` to browse available models and look up their multipliers at [Requests in GitHub Copilot — Model multipliers](https://docs.github.com/en/copilot/concepts/billing/copilot-requests#model-multipliers).
 3. Reflect on your usage patterns from this tutorial:
-   - Each prompt in Copilot CLI drew from your allowance if you were using a premium model — roughly how many did you use?
+   - Each prompt in Copilot CLI drew from your allowance if you were using a premium model — run `/usage` to see exactly how many premium requests you've used.
    - If you used the coding agent in Lesson 12, each issue/PR assignment was one coding agent premium request.
 
 ## Hints