Help please!!! Transitioning from Co-Sleeping to Crib

Clara
My daughter is 12 weeks old & I want to start transitioning her to her crib. I am guilty of sleeping with her in my bed, I found that is the only way for me to get some actual sleep plus she still wakes to feed twice (12am and 4am). I have a twin bed in her room where I can sleep until she gets in good routine. I would appreciate any helpful advice on what worked and what didn't work for transiting your LO to his/her crib? It is greatly appreciated, thanks!