Hello! Tell me, what about my rose, gooseberry and currant?
In your case, you can assume a lack of nutrients. Most likely potassium and nitrogen. Apply fertilizer containing these substances. It is possible and very desirable to fertilize the plants with compost as well, if you have one. If not, you need to cook it. Compost will improve soil structure and make it easier for plants to absorb nutrients. Plants after such procedures come to life, grow and feel great.