I have DPD (and some other things, so this may not apply) and I cook and have a part time job and am working on my doctorate. So I don't think the diagnosis is based on what a person can and can't do for themselves in the self-care or functioning in the world realm. For me, it seems to be based on having difficulties making decisions, looking to others for support, being needy, wanting others to be there 100% of the time.
What kind of supports do you think you need? Is there a way to get those on your own? I live in the US, so am not familiar with the way things work in the Netherlands.