Things that halved my usage:
- Long chats get expensive because the whole history and code goes along. Start a new chat per section and only bring the code you need.
- Fix small things (spacing, text, colors) in the code view yourself instead of prompting.
- Write one detailed prompt instead of 5 vague ones. "Make it nicer" costs you 4 rounds.
- Use a screenshot/sketch as input for layout, it gets closer on the first try.