My 20 month old is not a great sleeper, always banging cot bars in her sleep but can get her self off, wakes up screaming after an hour then back to sleep again, 5 days ago I put her in a toddler bed, first night was great within 20 mins of exploring her room she was sound asleep all night, same the second night, since then it’s taken 3 hours to get her to sleep, she’s out the bed and at the gate screaming. Do I give up and buy her back in cot until she’s older or persevere . I have not been able to put her in her toddler bed at night and her stay in it until she drops off she’s always out and playing/crying. Nap times in day are not as bad as night and she’s usually asleep within 30 mins 😫