You could do that if you wanted to be able to make the changes online for a reservation but I do not think it accomplishes what walking does accomplish. To do everyday separately means you cannot book any particular day until you are exactly 11 months out from that day. The purpose of walking is to lock in days before you are 11 months out. For example, the problem VGF faces with studios for first week of Dec is that if you wait until Jan 1 to make the first reservation for Dec 1 at 11 months out, you may find you are already blocked out (or find that even if open at exactly 8 a.m., it fills within nanoseconds and you are still blocked out because your computer is slower than someone else's in communicating with Disney's computer.
Here is what walking does: assume Dec 1 is a Friday and you want a week, Dec 1-8. You go on line on December 25 and book Nov 25 to Dec 2, thus locking in your first desired night of Dec 1. You can likely do that starting with Sunday, Nov 25, because it will be open for at least several minutes past 8 a.m. because there is less demand for that late Nov time before Dec begins. Once you have made that reservation, you not only have your first night but you have blocked out everyone from getting the room you will have if they attempt to reserve 11 months out beginning with any day from Nov 25 through Dec 1, i.e., no one can get your room with any start date of Nov 25 through Dec 1 because you have it for those nights and thus they are also blocked out from getting any dates in your room that occur after Dec 1. Thus, you could wait until Jan 1 to call and modify your reservation to Dec 1-8 and your room will still be available for all those nights (although you should still consider doing the modifications daily to avoid any risk that fewer rooms will be available first week of Dec due to some rooms being taken out of service or due to a higher number of set week owners in that week).
Reserving just Nov 25 and then next day reserve Nov 26 and drop 25 online does not accomplish what walking does, as you are competing with everyone for your room everyday and if you continue to do that until Dec 1, you will be in the same position as everyone else is on Dec 1 who does not yet have any reservation.
Thus, making a single day reservation online day after day gives you the ability to later change the reservation online but does not gain the reservation advantage you can accomplish through walking. All you would accomplish with that day to day reservation is avoidance of the phone call needed to modify your nights but you would still have to call to have all the nights joined into one reserevation