Changing engine mounts with engine installed

I've got a floor jack under the oil pan and the front end comes up as I jack. I assume at some point the engine will separate from the mounts? I might try and get a long pry bar in between the mount and crossmember but its awfully tight in there. Perhaps I should try jacking one side at a time to start? I wish I was lifting from the top end as I don't want to wreck the pan
Go to home Depot and get a length of 2" high density foam insulation cut out a 12" square and get a piece of 1/2" plywood and do the same.

Put the foam on the plywood on the jack. The foam will form to the shape of the pan and the lbs/sq in will be minimal.

I like the unbolt the metal mount from the block idea, really just need to support the engine.