I am a college student. My friend (who I have known for almost 3 years now) attempted suicide 4 days ago by overdosing on sleeping pills, but not taking a sufficiently high dosage. I only learnt about it a couple days ago, when I saw his father living in his dorm room with him and asked him about it.
The thing is, he's been acting absolutely normally since the incident. He's going to classes, taking interest in music and movies and other aspects of normal life, hanging out with our mutual friends and generally having fun. Even when he told me about the attempt he was super casual about it. Initially I thought he was making some sort of off-color joke, but he was saying the truth. Apparently, he had recently come in possession of sleeping pills and in an moment of anxiety/instinct, he overdosed. But it's only been 4 days, and he's acting completely normally.
I am totally confused by this behaviour. I consider myself to be a good friend of his and want to help him as much as I can. I offered to do all his work for him, I told him he could depend on me for anything, but he has denied all my requests for help, saying that he's fine.
What can I do to increase the chances of him opening up towards me so I can actually help him?