Hi,
My U2 was 4 months old when I got him. He was eating on his own but still asked for his formula. The breader told me it could take up to a year to fully wean him. Sidney never liked the syringe but loved to eat off of a spoon. We spoon fed him for a bout a month but only when he cried for it. Other wise he had amply food in his cage. I work nights and had family help with this. One day I got up at his normal feeding time but he never cried for his food. I asked my husband when he fed him last and he said he had not asked for it since I last fed him. From that day on he was off the forula and never cried for food again. He weaned himself. It was tramatic for me because I lost my baby all at one time. Now I have to work on him not feeding me. Just remember not to force it. It will happen. Good luck.