Well, I don't know how me last hitting more would have somehow made tide farm ancients less, but:
I felt behind in farm all game but i don't know exactly what I was doing wrong. I'm generally decent at hit timing, but it was rough with the early tide and mirana harass, and anchor smash killed my damage a bunch for last hitting. Lane never got stack/pulled back to tower and I didn't want to over extend. What should I have done to change the situation?
A quelling blade would have helped. It would have been easier to dart in and out. And would have negated some of the anchor smash negative damage towards the creeps.
As far as the lane not being pulled back, sometimes you need to be the one to make that call. The carry will usually have the better idea of how the lane is going and what the support needs to be doing more than the support. Harrass "X", work on denies, stack and pull, ect.
Aside from that, i didnt even look at your farm until you died around the 15-18 minute mark. Its possible i missed it but i didnt really hear you mention that you needed help up there. I could have sent nightz up there and went solo in the offlane if it was that big of an issue. You were talking about getting a Radiance or a Midas which would indicate things were going well.
It was a tough lane for sure. Tide is meant to bully like that. But i think there were a few ways it could have gone a little more in your favor.