struggling to eat regularly - advice wanted

i often struggle with having an appetite to eat something in the morning and afternoon and then when its night i end up eating a bit of dinner and then eat nothing but junk food.

i dont know how to encourage myself to eat, i have all my favourite foods downstairs, i normally wake up at around 2pm-4pm (chronically ill) so i kinda miss breakfast but i used to have a bigger lunch to make up for it

i also struggle with choosing meals, i have very few options mon-fri, most are frozen meals, but on weekends im better at eating regular meals because im encouraged by the people around me (different house)

i just need some advice and like, know if anyone else is the same?