Small tips:

When LLMs try to do the wrong thing, don't correct it with new instruction. Instead, edit your last prompt and give more details there.

LLM have limited context length, and they love stuck to their previous error. Just edit the previous prompt. Don't let the failed attempt pollute your context.

I know. It was just me being too lazy to write proper prompt.

And code size thing is not fixed by better prompt.

It also likes to even ignore reasonable plan it writen itself just to add more code.