You need to begin with semi - solids first. You can try giving juices of orange, berries or kiwi mashed for Vitamin C and whole grain or pulses flour porridge or mashed beans or lentils for zinc.
Its important to understand the baby's intake and growth. Its better to book an appointment for the same to discuss in detail of the needs of the baby with the Nutritionist. You can try booking a video / physical consultation through It's Our Baby App.