All 3 weeks will be a time of happiness and serving Hashem with the Bais Hamikdosh rebuilt IYH bkarov….. As soon as we wake up to serious teshuva and Achdus ASAP as one loving nation together and call out to our loving father Hashem wholeheartedly begging for the coming of Mashiach already.
I.e. nothing just happens from just sitting around and davening for something we need to go to the true level of YEARNING for the coming of Mashiach and rebuilding of the 3rd Bais Hamikdosh.