Alfalfa meal (2.5-1-2.5) top dress. Or alfalfa meal soaked in water, then poured over the soil.
Neem meal (6-1-2) top dress. Insects Frass (3-1-1) top dress.
Bat Guano (7-1-2) top dress or soaked in water for a tea.
Some kind of high nitrogen all-in-one like Happy Frog All Purpose, or Roots...