Hi Adam and welcome to BW
It sounds like he's probably quite overtired (OT), which might be causing/contributing to all the NWs.
Could you let us know his typical routine, i.e. WU, nap time (and length), BT (asleep). Do you try for a nap in the afternoon at all?
Also, how does he nod off, i.e. independently or does he have some help (e.g. BF, rocking, carrying, patting...)?
Could there be any pain going on, e.g. teething? And what were his nights like before the hourly NWs started? Did he STTN ever? How do you get him back to sleep when he wakes up at night? Is he awake for long each time?
Sorry for all the qns. Just trying to get the whole picture, then we can help you come up with a plan