No. A general rule of thumb is to play the note twice its original value.

First of all, you must make it clear that form serves content. This requires a good understanding of the musical work and an understanding of the composer's intentions. In the orchestra, the freely extended duration is controlled by the conductor, because conductors have high musical accomplishment. The conductor's handling of free extensions is flexible, but all based on a correct understanding of the work. Then, we who are not conductors must try to be just right when handling this symbol, that is, it must be reasonable and cannot be extended aimlessly, even though the name is called free extension.

If you're not sure what you're doing, just follow the general rule of thumb: play the note twice its original value.