Help with sleep.

[Kanny08]

Hi, just wondering if any1 can give few tips. My 14 month old will not fall asleep on his own anymore. I had sleep trained him when he was about 8 months which was successful as he started to sleep through the night.. however, when he turned one we went on a holiday and there he use to sleep in his crib... but his whole routine kind of got messed especially the first week as he became really clingy and wouldn't sleep properly so i had to rock him to sleep which worked fine as some days he would still sleep through the night and if he did get up i would either just rub his back or play white noise and he would go back to sleep. However, since we have come back neither he slept through the night even rocking wouldn't work and neither he put him self to sleep. I had tried to sleep train him again but its much harder now as he's more active and stubborn. Also. When i leave the room he cries louder and harder which i find hard to hear.
It just doesn't work. I spend like 1 hour putting him to sleep. He recently managed to sleep through the nights again :) however, i would like him to put himself to sleep without being rocked or patted as it takes too long. any tips would be helpful!!! Also, any ways to calm him down more before bedtime? At the moment, its bath, pjs, book, 5 mins of quite time and then into cot but he just gets back up and walks around the cot and if i leave he will cry... any tips will be appreciated. Thank u :) sorry for it being tooo long!!!