Yep, with meltdowns we just hold them close, don't let them harm anyone and eventually get them to take some breaths. I've found having them blow out the 4 candles of my fingers, 1 by 1 let's them breathe and have little fun with it.
Main thing is bringing them in instead of pushing them away or making them "wrong"
The meltdowns have pretty much completely gone away for our older son, and he used to absolutely lose his mind (like we thought he might be possessed 😆)
Also making sure they have eaten some protein has gone a long way- if theyre fighting it generally cause they're hungry and have only eaten fruit