My take is at two miles you have little time, and its not the place to be engaged in trouble shooting (one minute to touchdown max - aviate, navigate, communicate etc), particularly if IMC. Go round and establish cause ie is it really lost coms, finger trouble, previous controller gave wrong freq and you failed for whatever reason to pick it up - an endless list of reasons could be the cause. Have been caught out by the fact that the volume had been turned down.