Is it possible to do V-Y lip advancement twice as I'd like them bigger?

A lower V-Y is, in general, possible.
Of course, an “in patient” consultation would be necessary.

Best of luck !

For unique cases where a variety of modalities could be used to treat the condition, I would suggest an in-person or virtual consultation to develop a custom and effective treatment plan. It is difficult to precisely define the best option without collecting the same information. I suggest reaching out to an expert for a consultation with surgical and non-surgical methods to get a comprehensive option. Best, Dr. Emer.

A V-Y lip plasty is a surgical procedure that can increase the size and volume of the lips by making a V-shaped incision on the inside of the lips and then suturing it into a Y shape. This technique uses the existing lip tissue to create a fuller and more defined appearance of the lips. There are some limitations and risks associated with repeating a V-Y lip plasty on the same lips.The amount of lip tissue available for advancement may be reduced after the first procedure, making it difficult to achieve significant results with a second one. The scar tissue from the previous incision may interfere with the healing and outcome of the second procedure, leading to complications such as infection, bleeding, asymmetry, or loss of sensation. The repeated manipulation of the lip mucosa and muscle may affect the function and appearance of the lips, such as their ability to close properly, smile naturally, or retain moisture.Therefore, it is not advisable to undergo a second V-Y lip plasty on the same lips. There may be other alternatives to enhance your lips, such as fillers, fat grafts, or implants, that can provide more satisfactory results with less risk.
I hope this information was helpful to you.