RI-CLPM moderation

[CK]

Hi, Would really appreciate some advice after days of trying to work this out. 

Re: within x within interaction using a within-person time-varying moderator

I aim to examine whether a time-varying within-person variable (M) moderates within person associations between 3 other within-person variables, specifically, whether the relationship between variable (A) at one time point and another variable (B) at the next time point is moderated by the strength of the moderating factor (M). 

I plan to person mean center (from 3 time points) each variable and the moderator to obtain within-person deviation, then calculate observed interaction terms between the variable A and moderator M to examine how M effects the impact A has on B. 

All of the papers I can find use MPlus XWITH to look at this, but I would prefer to use R if anyone knows if this is possible? 

Appreciated!