Combined/mixed coolant fluids

Hi,

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I'm very stupid, but I added a green/blue coolant fluid to an already partly filled tank with a pink fluid. I've read on many many websites that it'll be bad in the long run for my engine. That there will be some clogging and can cost me a lot of money.

I am aware that I need to drain it and have it pressure-cleaned. However, I have an appointment on the 8th of november to have my Volkswagen Golf 7 checked for maintenance. I'll be driving my car in the meantime, which will be around 35 times or roughly 600-800km. Is it possible for me to wait until the 8th of november to have it cleaned or do I need to do it ASAP?

Cheers