Yeah, I would watch him carefully, he is a little under weight according to the Jackson ratio. Has he lost weight do you think?
I reckon if I had brought mine in sooner and heated and fed on a daily basis, I perhaps could have bought her up without needing the feeding tube, but she had gone too far. I found warming her and then giving her a warm bath (don't let it go cold) helped to persuade her to eat.
Please keep us updated I hate it when I don't know what happens to these little ones. I guess even more so with this one as it sounds so similar to the problem I had. I still don't know why she did it either.