Food for baby African grey parrot?

hi. My baby grey is 8 months old. I still handfeed her once a day. I mix powdered pellets with gerber baby food and nestum milkless baby food. Make it a paste/semi liquid form and syringe feed her. Is it ok to give her this mix.? I read somewhere that too much of vitamins can be toxic to birds. But she seems to be enjoying only that. Wat should I do?and what is the way forward from here. What extra thing should I do for her to be healthy and happy??