I would say he could eat pinkies now but try one first and see if he will actually eat it. It seems like he is tired of his food, but that is only my opinion. As in he tries one and decides they are boring and ignores them. When he starts climbing more he will be forced to use his leg and regain the muscle. As for the oil, they dont really have the abilities to expel any of the chemicals used if they were to injest it and the effects are as yet unknown but it could possibly cause alot of health issues depending on what they use in its manufacturing. Though the vast majority of mineral oils are organic, so it shouldnt be too much of an incident.