As the space.com article states, "That process may take a million years to complete, according to scientists who captured a new look at the star cluster formally known as G286.21+0.17."
This is a good measurement by ALMA and angular resolution seems to be about 1200 mas (1.2 arcsec) to image a few 1000 AU size observed or even smaller perhaps.
https://iopscience.iop.org/article/10.3847/1538-4357/ab879f, "Spectra of 76 continuum-defined dense cores, typically a few 1000 au in size, are analyzed to measure their centroid velocities and internal velocity dispersions." Another source disclosed "Hubble revealed about a thousand newly-formed stars with a wide range of masses. Additionally, ALMA showed that there is a lot more mass present in dense gas that still has to undergo collapse. "Overall the process may take at least a million years to complete," Cheng added. "This illustrates how dynamic and chaotic the process of star birth is,",
https://phys.org/news/2020-07-stellar-fireworks-celebrate-birth-giant.html
Completing the process of star formation continues to be messy and these reports indicate that. Magnetic fields can disrupt gas clouds as well as gas cloud fragmentation too.
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