Checking again, I already have the Ironwood Bed DIY. Sorry. List has been updated.I'll gladly give you my Ironwood Bed DIY for that Sinking Painting :)
(Also, if I had Redd yesterday, does that mean I can TT back and he'll have new items? 🤯)
But yes! If you time travel back a day, Redd will have a full new set of artwork. Then move forward a day to receive the artwork in the mail. Rinse, repeat. You can do this an infinite amount of times.