Transitioning to earlier bedtime

Hi, for those of you who have transitioned to an earlier bedtime (7-8) have you got any tips or is it just perseverance? My LG is nearly 12 weeks, we did have a bedtime routine of bath or pjs at 7pm ish, story and feed then up to bed about 9-10pm with me, however this week trying to get her to go down between 7 and 8, we bath every second night, leg massage, pjs on, story if she will tolerate it, then up to bed. Each night, it doesn't matter how she has slept during the day she had refused to go to sleep, if she does drift off she wakes as soon as I try and put her down. We keep lights dimmed, low stimulation, tried walking, rocking, playing her sleep music but she just fights sleep. She is clearly tired and showing all her sleep cues. She is EBF and likes to use me as a dummy to fall asleep with too but as soon as I unattach her she wakes up. Then at the usual time tonight 1020pm she flops off the boob and goes to sleep. This was after 2.5 hours of trying. She wasn't particularly fussy just wide awake. Will it get better? Or is there something that has helped you transition?