If you attend church, it's best to seek help with your pastoral ministry.
I don't know if the above link will work. If not you might want to try http://www.ecitizen.gov.sg and follow the links to Family and Community development, check on Family services and will bring you to the above link.
I don't know if they provide services for foreigners. Some agencies on this website provide free service for Singaporeans. Hope this helps!
Singapore to propose law to enable virtual marriage solemnisations amid Covid-19 outbreak.
I am male, Single, 29 years old, software engineer, local...
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To be specific set up an Pre Nup. They are not legally binding but taken into account in a divorce.