Need your tips! How do you help your baby to fall asleep?

[Starpop]

Hi knowledgeable mumsnetters, please tell me all about your techniques for helping your babies fall asleep.

My baby currently breastfeeds to sleep at night and either breastfeeds to nap or naps in the car/ pushchair if we're out and about.

He will be 4 months early Jan so I want to start implementing different techniques to help him fall asleep / self settle.

We did Ferber method just before 4 months, worked great.
Managed to swerve 4 months regression as he was able to self soothe by then.