(it may not depend on days you lived through)
For me it was around 12th day i was going outside a lot and when i came back my bot greeted me and asked to pick from 3 options (bath dinner or her)
In that event you go outside of your apartment and meet the landlond with a stove
For bot to greet you and ask to pick from 3 options you need to have had an event where she cooks for you sea rice with crickets yes. Just go outside a lot i guess.
You can cook by going in bot's menu (where you can talk with her)