Infants randomized to the usual care arm will receive usual care for 4 months. Therapy services provided to infants at this age vary in terms of frequency, location, and provider. Usual care is prescribed by the child's primary care provider (PCP), and in this population, usual care typically consists of one or both of the following: Early intervention therapy services provided by the state or Therapy in an outpatient clinic. Control group participants will be offered the Let's Move interventions after 16 weeks of control group.

Infants randomized to the Let's Move intervention group will be scheduled for therapy one time per week for 16 sessions (approximately 30-60 minutes per session). The intervention setting will involve both in-person (CCHMC clinic or in-home) and telehealth (in-home, video-based) sessions. The therapist will provide the caregivers with home programs to complete between therapy sessions (5 days per week). The home program will be based on the infant's goals set collaboratively between the caregiver and the evaluating therapist at the baseline assessment using the Canadian Occupational Performance Measure (COPM). At least half of the intervention sessions will be video recorded to assess feasibility and monitor intervention fidelity.

Let's Move intervention will be administered and videotaped with infant/caregiver dyads. Therapy will occur weekly (30-60 minutes per session) for 16 weeks, alternating between clinic and home (video telehealth) sessions. Each month, we will attempt to schedule two clinic-based sessions followed by 2 telehealth-based sessions

Motor test

Parent reported test for functional performance