Shevat is known for containing the holiday of Rosh Hashana or New Year for trees, especially fruit bearing trees. There is a classic dispute between the two ancient sages Shammai and Hillel. Shammai held that the New Year for trees is on the 1st of the month, when the moon is just born. Hillel held that the New Year is on the 15th of the months, when the moon is full.
This reflects a difference in their general approaches. Shammai's approach was to focus on the potential. Hillel's was to focus on the practical. So when building a vessel to receive divine blessings, there could be a lot lost in the transition between potential and practical. When there's a lot lost, then Shammai and Hillel are at odds as to what to celebrate - the potential or the actual. However, let's pray that when we build our vessels to receive blessings, we actualize our full potentials. Then Shammai and Hillel is agree on what to celebrate - for the actual matches the potential. Then the full sap will be present in all the fruits of our labors.
This ties into this week's Torah portion, as the Jews get ready to leave Egypt. Every drop of potential to build them into vessels to receive the Torah was given to them - even if it seemingly delayed the exodus. Only when the time was right, they were ripe fruits for the Sinai revelation.