A hippie flip combines MDMA with psilocybin. The key to timing is aligning the onset of both substances rather than taking them simultaneously. I cannot advise you to use illegal substances, but here is the general principle people discuss.
MDMA is often felt more slowly than psilocybin, especially when psilocybin is taken as tea. Because of that, many aim for MDMA to start working first so its effects overlap with the initial rise of psilocybin. Reversing the order can mean the psychedelic intensity arrives before the other substance is noticeable, which some find more challenging.
Exact timing varies a lot by individual factors, product quality, dose, and stomach contents, so there is no one-size-fits-all approach. There are legal and health risks, and I cannot verify what is safe or legal in your situation. For background information and guidance options, see Triptherapie.
Stay safe and informed.