Although this forum doesn't support the selling or buying of young unweaned parrots to the inexperienced. It's a fact of life & is going on all over the world. It's i practice i HATE but that said you can't shut the gate after the horse has bolted so we have to do our best to help these people that find themselves in this situation.
I am hoping that the OP will do everything right to raise these 2 chicks to be strong & healthy.
By the looks of your 2 babies they are not anywhere near 3 months old. The youngest one looks about 8 weeks & the older one about 9 weeks. So should be on 3 feeds a day & as posted in your other post the reason the 2 birds have different size crops is because one is bigger & older than the other.
If all goes well & you start to offer them soft foods in their cage they should be fully weaned by 4 months old. But for now you will have to feed the formula 3 times a day.
When they start to fledge in a few weeks they will start to refuse to eat much formula, that is the time to start cutting down a feed, usually the lunch feed but offer fruit & veggies, sprouts & maybe some pellets & a tiny bit of dry seed. You just have to do it slowly but usually the baby will let you know when it doesn't want rearing food anymore.
Don't wait for the crop to empty. Then he gets hungry. You don't want to keep em hungry. Also kelp the food warm around 98 degrees to a 100.
Sour crop is bad and you want to avoid it. Common cause. Cool food.
Never force it always drain it. Let them eat on there own pace
Sorry if I offended you. I'm just real serious about selling and purchase of unweaned birds. Essp to inexperienced feeders. It's not fair.
Honestly you could be the best of the best and I still wouldn sell anyone a unweaned baby. I don't think you acually understand the situation your in. You don't have one but 2 unweaned babies with no raising experience. Please don't take offense but you did purchase them. Here's a awesome link. Hand-Feed Parrots
This link is pretty well explained on hand rearing. PLEASE don't take offense.
Kelp reading up. You can handle this.
Try to enjoy the experience and keep asking questions if anything arises that you do not understand or need to know. Seems there are alot of knowledgeable individuals on this site and would be more than willing to offer you assistance.
The assessment that these two birds look much younger than three months is correct. They are approximately two to two and half weeks younger than you originally stated.
Most people handfeeding birds had someone teach them how to do it properly and educate them in the process of feeding and then weaning a baby bird. It isn't for the inexperienced and it is unprofessional for a breeder to sell an unweaned baby to anyone inexperienced in handfeeding and rearing a baby.
That being said, you are doing the right thing by asking questions and getting as much information as possible in order to raise these birds properly. If they are on three feedings a day, there should be approximately 5 hours between the three feedings with a check that their crops are completely empty before feeding them again. They are old enough for you to begin offering them an abundance of weaning foods. Millet, mashed sweet potatoes, mashed bananas, english peas, whole grain cereals, oatmeal, baked potatoes, broccoli.....all of these are great foods to begin introducing to your birds now, if you haven't already done so.
Try to enjoy the experience and keep asking questions if anything arises that you do not understand or need to know. Seems there are alot of knowledgeable individuals on this site and would be more than willing to offer you assistance.
People no offence but can we please offer the assistance. Havergara is asking & not further confuse her with all the added information. I know everyone is eager to help but to much infomation confuses & mistakes are made because there is a confliction of information being given.
IMO these 2 babies should be on 3 feeds a day with approx 8 hours between feeds. But that of course depends on the volume the crops hold in which case an extra feed maybe required. Fed at 6AM, 2PM & 10PM. Soft foods can also be added between the formula feeds to encourage the babies to pick. It's also a good idea to have the crop empty completely once in 24 hours. But i like my chicks to be empty at each feed, less chances of crop infections.