There is one aspect of his testimony that does feel very real, and that is his complete lack of love for Susan. It fits with his version too, so he has no reason to lie about it, but the danger is it also fits with the State's case.
His testimony about the last time he saw Susan alive, standing at the foot of the bed after him saying he was 'done' and before he says he went back to sleep, and not being able to remember Susan's words sounds like a lie. I think if you had woken up an hour later and then discovered your wife had committed suicide you would force yourself to remember at that point what they had said only an hour ago. It was their last words, so there would be a point to backtrack over what they said and if there was any indication they were going to go and do that. This is something that feels very off and adds more weight to it being a lie.
I don't think Perumal is going to save JR's bacon. There is no explaining the broken ribs with the ingested blood in her intestine, less than an hour before her death. JR has restricted her time of death with those texts from Susan sent after 7am.
