My 7 year old DD has a terrible time getting to sleep every night. We have struggled with this for a few years and I just can't take much more.

We have the same routine every night, we have no screens once she is home from school and she can get to sleep if she just stops fighting it. Maybe one night a week if you can get Her to lay stil for a few minutes she can fall straight asleep. Other nights she just won't stop moving/talking and then doesn't get to sleep.

She has been not allowed treats/toys/outings the works I have taken everything off her and it doesn't seem to bother her.

I would love some tips on helping her rest her mind I think the problem is before bed.and we have tried mediation/relaxation eye and they have worked. Everything has been tried for weeks on end to try and make it part of the routine but it has always failed.
Any options at this stage I am willing to try. One thing I have thought of is her diet and although she eats fairly healthy maybe food is making her more irritable?

I have no idea any more, hence why I am asking this awesome bunch of ladies for ideas.

Thanks