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

for my babygirl, at 3 months old, she was able to follow the sleep routine i set for her (8pm bedtime, dreamfeeds 3hrly if she wants). now shes 6 months old, sleep regression screwing her routine😪😪😪 but you can alsways try to see what suits u and your baby :)