I usually only elevated with one receiving blanket with DD 1. DD 2 has had a bad cough so I was keeping her in the swing. But her sleep has been so crappy I thought what the heck might as well make the crib transition now. I was reading and some sites are saying 6" / 30 degrees!! That seems high!
I added another receiving blanket and I would say her mattress is about 1. 5" / 10-15 degree elevated right now.

How far do you typically elevate the crib mattress when LO has a cough or for reflux / other health concerns?