they should continue until you go into labor. they call them practice contractions, but they are more just like preparation contractions. your body prepares for what's to come. So they should continue to remind you what to look for, and until the worsen, become more regular, are stronger and longer lasting and painful, then those are more the real deal. The bh won't go away though .
They are annoying though... Im prepared now they can stop lol
The BH are pose to help you prepare for the real contractions they don't last long 30 seconds. I get many BH althe time.
They only last for about 30 seconds or less