How can i set a good sleep pattern of 3 months old baby? Is it even possible?

I tried moving my baby to a brighter place to sleep and allowed more noise in the day. also made our interactions more hyper. in the night, all's dark except a little light, whisperings, no eye contact and minimal talking. doesn't really work. he developed his sleep pattern naturally with continuous sleep after every feed in the night. in the day, he's unstoppable (jumping, screaming, laughing, minimal sleep). He's close to 6 months now.