[pigsmakemesmile]

I would give him much more time to get use to his environment before doing floor time. To a pig, taking him out of his cage and placing him on floor time is like just putting him into another cage but only bigger. I waited a long time before I began floor time and it went well. I have 5 pigs. When you do floor time, make the area smaller and provide arears he can run into to hide otherwords...provide a sense of security. Also provide food and treats so he will associate floor time as something meant to be pleasant. When done consistently enough, he/she will do much better.
good luck.