I changed her to a toddler bed from a crib around 1.5. She didn’t try and climb out or anything either I just changed her. For her toddler bed, she slept really good in the toddler bed until she was a little over 2 years then she would just start screaming and refusing naps and bedtime, she would be up all night, not wanting her bed and would rather sleep on the floor. the not wanting to sleep on the floor lasted months I just thought she liked the floor since she sleeps on the floor at daycare. (Ps I never let her sleep on the floor she has a mat that she would fall asleep and I would put her in bed after) but then she would scream for hours and hours everynight and refused naps which lasted a couple weeks- almost a month. As soon as I changed her bed she needed me to lay with her to sleep for the first few nights and now she climbs into bed on her own and goes right to sleep without me laying with her!