Don't build a schedule from a blank page. FlipperForce ships starter templates that already have the standard rehab phases and tasks laid out. Load one and adjust it to your property rather than trying to remember every task yourself.
Most rehabs follow the same order, and the order matters because each phase depends on the one before it.
Get the property cleared out and ready to work on. This covers interior demo along with whatever site prep the property needs.
Most investors start outside and get the shell cleaned up. Roof repairs so the property stops leaking, windows installed, exterior paint. The goal of this phase is a dried-in property. Until the building envelope is sealed, everything you do inside is at risk.
With the property dried in and the interior demoed, start rough-in work: electrical, plumbing, and HVAC. These run inside open walls, so they have to happen before anything closes up.
Once rough-ins pass, move to drywall and finishing. This is also when kitchens and bathrooms get measured for finish installation, because cabinets and countertops need actual finished wall dimensions rather than framing dimensions.
Interior doors, trim, vanity cabinets, and tub installation if you're putting in a new one.
Painting, plumbing fixtures, countertops, and the rest of the finish work.
Every phase out of sequence costs you money twice: once to redo the work, and again in holding costs while you wait. Rough-ins after drywall means opening walls back up. Countertops measured before drywall means a template that doesn't fit. The schedule is what keeps contractors from showing up before the work in front of them is finished.