Any process that modulates the frequency, rate or extent of G1 to G0 transition. [ GOC:di http://www.ncbi.nlm.nih.gov/pubmed/24088570 GOC:TermGenie http://purl.obolibrary.org/obo/go/references/0000058 ]
Synonyms: regulation of G1/G0 transition regulation of establishment of cell quiescence