Look at this picture. Normal leaves lose their green color between veins, which should be magnesium deficiency.
Chelate magnesium with Coolitol and spray it every other time before the symptoms get worse.
Irrigation conditions, appropriate watering.
Oh, I hope it will rain soon.
It's a little dry to look at the photos. It's hot and rainy now.
Growth regulators can be sprayed on the leaves at the same time to improve drought resistance, such as brassinolide, Bihu, Tongtianbao and Plant Power 2003.