Small Text Legibility in Digital Printing

I am reviewing a design file where the nutritional text is very small (around 5pt-6pt).
Concern: If we process this through Digital Printing instead of Rotogravure, is there a risk of the text becoming blurry or unreadable?
Question: What is the minimum font size we usually recommend to customers for digital prints to stay safe?

I'm not familiar with the digital printing requirements, but as I can recall, the minimum width of the letter line for gravure printing is 0.3-0.4 mm, it is also affected by the font type and size.