After mixing I usually toss the bottles in a very hot water bath, not quite boiling, and let the whole mass cool to room temp.
It seems to impart a few days of maturation in a couple of hours.
(For some reason, I thought this was common, but don't remember reading it. Must have been too long ago.)
That is because it assists in allowing the flavours to meld more readily vs creating "hot spots" on a fresh batch, thus accelerating the maturation time as you stated.
I usually leave my liquids (the ones I brew) out (on my desk) for about a week before storing them. It seems to mellow them out as well. Someone posted on placing them in the sun, that to me was a little extreme.
I also found out why many made as you order liquids from vendors are inconsistent, when we know they should all be the same (if measured). They
are after a period of a couple of weeks. I keep all my 30ml bottles in the dark, but my 3-5ml are usually just on my desk.
I also brew ahead of time e.g 2 weeks. Some brews take as long as a month to properly homogenise.