The behaviour that you have described for your husband is not normal following a TIA
. TIA are different from stroke. If you had detailed about the type of symptoms that he had during TIA, then it would have helped me in deciding the relation of these symptoms.
He surely needs to go back and be evaluated for these symptoms. He seems to be having forgetfulness which can be seen in temporal lobe stroke
apart from many other conditions.
Convince him and take him to a neurologist