Disclaimer- I am not a hand-feeding expert:
You won't harm her from a bit, but you do need a better solution. Baby food in a jar can be okay in small amounts but not as an only food,-again, it is not balanced and often contains high levels of citric acid and preservatives. Too much citric acid is not good because it can mess with iron storage. It also just isn't complete enough for them.
I am hoping others chime in, because I am genuinely not sure. Babies are just so fragile and need such specific care/feeding. Human vitamins are too much for them...
If you look up hand feeding recipes, a lot of places do talk about infant cereal, but I always was told not to do this due to enrichment/fortification at human levels.
You might be best mashing up steamed foods etc and making your own puree, but I am not sure what ingredients I would add-- You want them to be digestible etc and not too high in sugars. It also must be sterile and at a specific temperature for hand-feeding, so if you make your own, cleanliness of all containers, hands, storage etc is extremely important..Do NOT use tap water-- needs to be purified.
I just found a site the says:
"Never use foods based on baby cereal or Egg & Biscuit Mix as these are unlikely to have the right nutrient levels needed by your chicks. However, high protein baby cereal can be used in an emergency as a short-term food for a day or two until a proper hand rearing food can be purchased." https://scas.org.au/html/hand_rearing_part_1.html I am not sure if this is good advice, but I will keep looking...They are lactose intolerant, so definitely avoid dairy mixes.
here is another website with more details on hand-feeding:
https://hari.ca/hari/research-facil...cine-pediatrics-housing-feeding-baby-parrots/
You could MAYBE try making some plain oatmeal and blending that up, while adding a few mashed pellets maybe..depending on the pellets? BUT you want to make sure you don't OD on vitamins or give formula at the wrong temp. I really hope others chime in because I am not sure about what I just said in terms of pellets or oatmeal. Again, I know people do use baby cereal at times, but I have only ever heard bad things about doing that, so I would be cautious about using baby cereal specifically. At the same time, if
something is better than nothing, I am definitely not telling you to not feed your bird...I just don't know what the BEST solution is, aside from making some yourself.
Is there no breeder nearby?
Like I said, I know people do use baby cereal, but I've heard lots of bad things about doing that and so I am hesitant to encourage it, even though I know it would be short-term, it just seems like there has to be a better alternative. if it's super short-term, it might be okay, but it's definitely not ideal.
*do make sure that if you research this, that the sources are referring to parrots, as wild bird sanctuaries use a hand-formula in a pinch, but it's not appropriate for parrots*
I could be overthinking it, but I have never tried giving a parrot baby cereal because I just was always told not to...I wish I had an answer.