I've been in a similar situation, and I found that local community centers in Riverside can be incredibly helpful. The Riverside Community Center offers a variety of parent support groups and activities for toddlers, which can be both educational and fun. Also, consider checking out the Riverside Public Library for storytimes and toddler programs that encourage social interaction. Meetup.com often has local parent groups, which can be a great way to connect with others and find support. Have you tried any community events yet? They can be a great way to integrate into the local scene.