Bedtime is too early hun... I would start by pushing it out to at least 730pm... at 24 months, most are on a 2 hr nap and 13 hr day... so a total of about 13 hrs of sleep (11 night and 2 day)...
As for the bottle - at this age, I would just take it away cold turkey and offer her milk in a sippy. She is old enough to understand and will be mad for a few days but will move on... also, this is awful for her teeth - she should be having her last milk, brushing teeth then going to bed.