Vivian Sonnenberg

Vivian Sonnenberg is one of the longest-practicing baby sleep consultants in the San Francisco Bay Area, with over 25 years of hands-on experience dating back to approximately 1990. Based in Mill Valley in Marin County, she has amassed nearly 180 Yelp reviews — an unusually large review volume that reflects the sheer number of families she has worked with over more than two decades. Her style is straightforward and practical: families typically see meaningful improvement within two to six nights.

Services Offered

• In-home visits — Vivian comes to your home for a personalized session lasting approximately two hours, where she assesses the sleep environment, observes routines, and builds a customized plan
• Newborn packages — Available for families immediately after coming home from the hospital, providing foundational guidance during the earliest days
• Three months of phone support — An exceptionally long follow-up window that covers multiple developmental transitions and potential regressions
• Daily check-in calls — Scheduled phone calls during the initial implementation phase to monitor progress and adjust the plan
• Free initial consultation — A no-obligation introductory call to discuss your situation
• Phone availability — 8 AM to 6 PM Pacific Time for questions during the support period

Who This Practice Is Best For

Families who value experience above all else and who want a consultant with a proven, no-nonsense track record. Twenty-five years of continuous practice and hundreds of positive reviews provide a level of empirical validation that newer consultants cannot offer. The three-month support window is also one of the longest in the industry.

Pricing Note

An additional $95 travel fee applies for in-home visits outside Marin County and San Francisco.

Location

Based in Mill Valley (Marin County), serving San Francisco and Marin for in-home visits. Virtual and phone sessions available nationwide.

Frequently Asked Questions

How long has Vivian been practicing? Vivian has been working with families on infant and toddler sleep for over 25 years, making her one of the longest-tenured sleep consultants in the Bay Area.

How quickly do families typically see results? Most families report meaningful improvement within two to six nights, depending on the child's age, temperament, and the specific challenges being addressed.

What does the three months of phone support include? Vivian is available by phone from 8 AM to 6 PM Pacific Time throughout the three-month support period. This covers scheduled check-in calls as well as ad-hoc questions as they arise.

Is there a travel fee for in-home visits? In-home visits within Marin County and San Francisco are included in the standard fee. An additional $95 travel fee applies for visits outside these areas.

Does Vivian work with newborns? Yes. Newborn packages are available for families immediately after coming home from the hospital, providing early foundational guidance before formal sleep training age.