Q returns in “The Q and the Grey” and that’s all we have to say about that. Then in “Macrocosm”, Janeway returns to Voyager and finds the ship deserted.
Trekabout Episode 264: The Q and the Grey/Macrocosm

Q returns in “The Q and the Grey” and that’s all we have to say about that. Then in “Macrocosm”, Janeway returns to Voyager and finds the ship deserted.
Cliffy
-I agree with your criticisms of The Q and the Grey, but the episode is better than it deserves because of the chemistry between Mulgrew and DeLancie.
Norman
-The Q Baby actually does go to school, but we don’t see any scenes of him and Naomi Wildman (the baby) together (although the Q Baby then a teen does hang around with another teen 😉 ).