BESURAS HAGEULO:

Chapter 68

Further, and this is essential, to cry to G-d about the length of the exile, "Until when"... and to beseech and entreat and do everything possible so that the true and complete Redemption through our righteous Moshiach will come imminently and immediately.

The Jewish people find themselves in exile already more than nineteen hundred years and our righteous Moshiach has still not come!... All the Divine service of exile has already been completed, and we have already done everything in every way possible (including in particular the rejoicing of the month of Adar for sixty days). It's unknown what else is to be done. Nevertheless, another week, another day, another moment has passed, and still the true and complete Redemption has not yet come in actual reality!

(From the talk of Tuesday, the eve of Shabbos Kodesh, Shabbos Kodesh
Parshas Titzaveh, the 7th, 10th and 11th of Adar Rishon, 5752)