I'm no expert, but that sounds good to me. If it hasn't been long since you planted it, it may still be suffering from shock, in which case another transplant would exacerbate it. But I'm a big believer in the "try it and see" school of gardening, especially when it comes to apparent failures. It may well be happier in a pot with some more nutrient-filled soil. Some plants just need a little more coddling, especially after stress. If it's not dead, it still has a chance. I don't think it's too late to try, and in a pot you could extend the season if you needed to and have a sunny indoor spot.