Honestly rose with some difficulty! But maybe a few things that might help.
Overtiredness is a huge trigger for me. So try and get naps.
Liquids are the most important, very cold water tend to stay down more. I also find fizzy drinks help. (Have no idea why)
Just eat a little, don't force yourself to eat a whole meal. I graze on salted cashew nuts. But eat what you fancy in the moment.
I've only just got to the stage of eating to help stop nausea (13 weeks) so it isn't a given. If it goes on for a more prolonged time you can ask for medication to help .
Good luck and I hope you feel better soon.