I really want to take my miralax (polyethylene glycol) dose down just by a little bit. would that be safe?

Yes: Should not be an issue. Try more vegetables like spinach and fruits like apples for more fiber.

Usa as needed: Miralax (polyethylene glycol) is primarily a wetting agent, that has a variable dose that depends more on your diet and bowel habits. Most can vary the dose up or down to reach a personal best dose. A full suggested dose may work for many, but double or half will work best for others. Getting into a habit of scheduled emptying 1-2x daily can often let you wean off the material altogether, but i would do so gradually.