I would give the plant some shade protection to start while it’s trying to recover and not rush to add too many different fertilizers that may cause further imbalances and nutrient lock up. If your irrigation water is alkaline and you water the leaves, the sodium chloride can concentrate on the leaves as the water dries and being in full sun stresses the plant further. Micronutrient foliar application with good water can supply quick nutrients, but it may take a few weeks to see results. I think low concentrations more frequently is better.
Most of my tropical plants benefit from gypsum (although my soil has plenty of calcium it’s not accessible to some plants because of the alkalinity) and iron. I use Eddha iron chelate for alkaline soils. Often times I will add additional sulfur (gypsum contains sulfur).
Longer term, I feed the soil biology, if you have a healthy rhizosphere, the soil microorganisms balance the pH and releases locked up minerals. I use rock dusts, biochar, humic and fulvic acids, compost, and woodchips. However this takes time.
I just recently revived a green sapote and mamey I got in the mail with the above mentioned strategy. Good luck to you!
Janet