As far as I know, as long as other health conditions are met, I dont see why a plant wouldnt flip back and forth multiple times? Ive never re-vegged more than once.
Ill be pulling out the rootball here soon, and cut back the roots and replant into fresh soil mix.
Ive read tho that the further a plant originates from the equator, the more difficult it is to get them to flip back to veg. I had some Freezeland Indica genetics last year that when I flipped to 12/12 for 6 days (to show sex), then back to veg, some of them didnt reveg. They stayed in flower. Flowered during June/July
So revegging may not apply to certain gentics , especially autoflowering, and ruderalis influenced genetics.