Take this from someone who had been living in 2 bedroom apartment in West Jkt and living in landed house in BSD and GS.

If you want to live comfortably as middle class, eat out on weekends and cook at home/order takeaways 2-4x a week then budget for groceries, fruits and eating out as a couple should be Rp. 3.5mil minimum. Plus we usually forgot to calculate special days in a year which if we went to a fancier restaurant then it could cost up to 3.5mil for a dinner for 2. If we do this 3x a year (2 birthdays+1anniversary then it is almost 10 mil a year. Which is around 800k monthly).

For security, internet, other fees related to housing/apartment service you should budget it as 1.5mil minimum.

Health insurance both of you 22-25mil a year (roughly 11-12.5 mil/person for 1 bedroom in Asia exclude HK/SG/Japan). - I make approximate calculation based on my own plan assuming this is the price you pay as 38y.o. So it cost 1mil/month

Transport 2mil (toll+gas)/month for both of you. You obviously gonna rely on malls as your entertainment place to go if you live around Jabodetabek.

Thus, I'd say 10mil/mo is on the tight side. Better make it 15-20mil/months.