Parents of children who stutter (CWS) are often given advice to aid their children’s fluency (see extensive discussion in Bloodstein, et al. (2021)). One standard advisement, derived from the Demands and Capacities Model (DCM) is to simplify the complexity of their speech and use language more closely related to their child’s own language skills. This advisement can be found frequently on the internet. Despite this, there is very little research that provides evidence for this practice. Additionally, little research has been conducted to analyze this piece of advice longitudinally in regards to a child’s persistence or recovery from stuttering. Our study aimed to look at this advice at stuttering onset by analyzing language complexity in 71 files containing mother-child play interactions with CWS who go on to recover (CWS-R), CWS who go on to persist (CWS-P), and children who do not stutter (CWNS). We found that there were not any significant differences in language complexity of speech between mothers of CWS-R, CWS-P, and CWNS and their children. Thus, we did not find support for advice to parents to simplify their speech to help their child who stutters.