Hmm, I cook dinner about 4 times a week. Plus cooking daily for my dear daughter, I think the groceries shld be about $300 a month (never really keep track)...
Eating out I think it shouldn't exceed $200 or $250 per month.
Diapers about $30 coz I also use Bumwear for my dear daughter.
No need milk powder coz still bfding.
Household items... maybe $100? Sometimes more, sometimes less. Depends on what I run out of at home.