I can't sleep and I have been told to drink warm milk. Can it be chocolate milk

my doctor told me to have a warm milk before bed as i have been having sleeping problems as the heated milk has properties that apparently help sleep as opposed to cold milk. i screwed my nose up at the thought of plain warm milk so she said make it a hot choc or any flavour i wanted (except coffee of course). ive actually been enjoying malt in my milk....yummy...maybe even try a drop or 2 of vanilla (i havent tried that yet) and a little sugar or something. i assume that there isnt enough caffeine in drinking chocolate or chocolat flavoured powders for it to be effective against sleep... good luck

I dont see why not make it hot chocolate