Hello, I have a problem. My child is 1 year and 5 months old. He had a…

Hello, I have a problem. My child is 1 year and 5 months old. He had a bottle of milk when he was 9 months old (that's how it turned out). I switched him to biolakt, I make it myself. He still eats at night, I'm afraid that his teeth won't be damaged. I tried weaning him off, didn't give him at night, but he cries for more than 2-3 hours, in the end I gave up and started giving him some, reduced the dose, but he still needs it by morning, nothing else wants water or juice, only biolakt. Can you tell me what to do? He needs food about 2-