What is an apologetic response to Jewish skeptics who argue that God would not want them to break the Old Law without 100% certainty?

Many Jews claim that if God wanted them to stop observing the Old Law He would have made it more obvious that this was the case, in fact they assume that He would have to give them some kind of deductive knowledge that this was the case because otherwise they would allegedly be left in grave uncertainty as to how to obey God. As you can see, they are not just being skeptics, for example, they might admit that the argument for the resurrection is pretty substantial, but they would refuse to accept it because it is merely inductive, saying maybe it would be a good reason to reject Deism but not Judaism. How do Christian apologists respond to this argument? For example, could they point out that arguably there is progressive revelation even within the Old Covenant?