How is the relationship between yourself and daughter when she stays over and sees you? She is 11 years old, so she may say things to you, does she say she wants to spend more time with you, I don't suggest you ask her outright, just wondering what has been said about this and holidays.
The contact sounds limiting and inflexible, when your daughter stays at weekends is it one night or two nights overnight?
Have you approached your ex in writing about your requests and asked for a reply. You could get some help on here how to word an email/letter.
If you don't want to do this, or it does not do the trick, before you could apply to court, you have to go to
mediation. You contact your nearest mediation service, make an appointment for a MIAM, it will be assessment appointment with you to decide whether to invite your ex for an individual MIAM and then look to see whether a joint appointment would be appropriate.
I would base your request for additional contact with your daughter and for holiday contact with arguments of how that is in her best interests, I would not start your case off with criticising your ex about food, keeping her up late etc...I would suggest you focus on trying to increase the time your daughter spends with you.
What are your proposals?
If contact has proceeded for 5 years with little interference I can't see how contact could be reduced, other than for good reason which you do not mention.
Best Wishes