This plant is in need of chemistry. The soil seems to be devoid of organic matter, moisture, proper acidic pH. Without knowing any more than I can see I would get a bale of decomposed DECOMPOSED organic matter, spread that on top of the soil no more than an inch at a time. A slow release fertilizer is critical.
What fertilizer have you used? I am seeing that this plant has had none. Or that the pH might be so high this plant is unable to use what chemistry is in that soil.
Your plant is suffering multiple symptoms of plant starvation. Plants make their own food. Fertilizer is not food. Fertilizer is critical for plants to make their own carbohydrates or food for repair, storage of food in the roots, vegetative growth and reproductive growth. Your soil looks unhappy, your plant is on its last legs.
Please tell us what you have added for fertilizer? Any compost? This most certainly can be turned around.