I did sleep train him using the Ferber method, and it worked really well for about three months. I started sleep training when he was five months old, but ever since he turned eight months, he has refused to lie down in his crib. After I put him in, he stands up and screams like someone is trying to harm him, and he won’t calm down. When I try checking on him at set intervals, he just screams even louder every time I check. If you have any advice for me I would love to hear 💞