I don’t blanket at all.
either does my friend who has a TB, who doesn’t get a thick coat. It’s been in the 30’s here too. We just toss out extra hay when it’s going to be colder out.
So long as they have a run in, plenty of hay and do get a winter coat, you don’t have to blanket.
"Take the time it takes, so that it takes less time."
"Expect a lot, accept a little, reward often."