I went through the same thing with my daughter’s father. Even after countless diagnoses from multiple different areas, including my daughter herself, he was still in denial. We still do go through it, but she’s old enough (14) now to know when she needs her meds and when she doesn’t, so she can self-advocate and take them herself. However, when she was younger, I had her take them at school, that way there wasn’t an issue if he didn’t want to give them to her or not, she just took them first thing in the morning at school. That was the best scenario for us and might work for you.