My tomatoes start to turn to ripen but drop off the plant, leaves are curling. Tomatoes fall off about the time they turn white and the leaves are curling and droop.
Tomatoes Start to Ripen but Drop Off the Plant
Certified GKH Gardening Expert
How is the weather? You may need to increase watering. Tomatoes will "abort" fruit if they do not get enough water. Additionally, the leaves will curl and plants may droop or wilt when too hot or in need of water. If temps are fairly warm where you are, like 85F or above, then you should water twice a day. You can always pick the near-ripe tomatoes and allow them to finish ripening indoors.