Leaf loss is a symptom, not a fertiliser recommendation. With potted Aglaia, begin by checking whether the plant's environment changed recently: a move indoors, a darker corner, colder nights or a different watering routine.
Remove the nursery pot from its decorative cover. Look for trapped water and feel the compost below the surface. A plant can appear dry from above while its lower root ball remains wet.
Change one thing at a time
If light is inadequate, choose a brighter suitable position and increase exposure gradually. Do not combine a sudden move into strong sun with heavy feeding and a major trim. Several changes at once make the response difficult to interpret.
Check the leaves that remain. Note whether damage is limited to older foliage or appears on new growth too. Inspect the undersides for pests rather than assuming every falling leaf has the same cause.
Record watering and photograph the plant once a week in the same light. Existing damaged leaves will not become new leaves again. The useful signs are whether the loss slows and whether subsequent growth looks sound.
Related reading: Aglaia Care: Light, Watering, Feeding and Pinching.