I’ve had some of those problems, I’ve found when I turn those “exhortations” into mantras I can monitor my body and maintain good form. One of my favorite ones when it get’s late in the race is “toe up, knee up”, can’t take credit for it, my running coach came up with that one. Maybe turn the reminders into mantras: “engage your core”, “lean forward”, “cadence, cadence, cadence”……all of those help.