chareidimolim
trust me-in the name of Hashem-that if we were yearning for the Bais Hamikdosh it would have been built already with mashiach. YOU don’t need to do any Tangible action, cause Hashem will take care of it with Mashiach building it.
i.e. instead of someone trying to start builing it with a contractor. let him in the same time instead daven for the Bais Hamikdosh & mashiachs arrival & do teshuva on behalf of klal yisroel
Hatzlacha