No, certainly don't leave him to cry if he's really crying. If he is fussing a little you can leave him to see if he settles.
I would, if you want, offer him the 1oz with 5 oz water and if he doesn't want that then move on to putting him back to bed. If you don't want to offer that bottle at all then you should work with the shh/pat and if that doesn't work over a few days I would try something else, maybe pu/pd