As Roger said, this is OTL. As early as the Preclassic the center of Maya civilization was Guatemala, the Maya population in southern Guatemala actually decreased by the time of the Classic Era and the Maya expansion went north and west into Mexico rather than the other way around, the Yucatan didn't have any huge major cities until the Late Classic at least. They also did have some major cities in Honduras, like Copan. As for going further into Honduras, generally the Maya didn't have huge waves of settler groups until the Terminal Classic, aka the great "collapse" of Maya civilization, when various waves of enigmatic Mayan-speaking groups moved across the area settling mostly in Tabasco and the Yucatan, and eventually some refugees went back into the Guatemalan lowlands which had been the epicenter of Classic civilization. I suppose it's not outside the realms of possibility for one group to head into central or eastern Honduras but they'd be getting further away from the various trade centers on which Mesoamerican civilization so relied. Best I can figure, for whatever reason there's no Classic Collapse but we still see western groups like the Putun Maya migrating from the west and either some of them pass through the region or they displace local groups who in turn go further east.