I've only done this a couple times, but I have good luck turning a rough form (as @TxTurner notes) and then setting the bowl aside for a few months.
My technique is, I keep all the shavings from the bowl I just turned and stuff those, along with the rough bowl, into a (plastic) shopping bag that I tie off. I'm careful to pack the bowl in the center of the bag, so there's plenty of moist shavings evenly surrounding the bowl. I also don't tie the bag so it's airtight - I leave a little gap at the tie so air can circulate.
I check on the bowl every two months or so; this lets me know if I can proceed, and also helps rotate the shavings around inside the bag...
By the way, "know if I can proceed" is still a thing I'm not totally sure about. I've taken bowls out after four months and still found them quite true when chucked up (and none of those bowls have subsequently cracked), but I'm not sure how this would work for a super-thin second turning, or very green wood, etc.