I sort of disagree with setting an absolute limit on the number of arrows one should shoot per day. Clearly, your body should be your guide, and therefore it's necessary to clear up any existing inflammation before you can set any kind of meaningful limits on future shooting. To just continue shooting while it hurts, hoping that the problem might go away on it's own is unrealistic. More likely the problem will become chronic and harder to resolve. Unpleasant though it may be to deviate from your shooting plan, it wouldn't be as bad as having to give up shooting entirely for an extended period of time.
However, once the immediate issue is resolved, I wouldn't set an arbitrary limit on the number of arrows you should shoot in a day. I've shot more than 50 arrows a day for years, not every single day, but most days. There are significant differences between archery and weight lifting. Take the comment about shooting one arrow, and then retrieving it before shooting another one, which I think is a great idea. How many people would go into a gym and do one rep and then walk around the gym before doing the next rep? Even if you shoot more than one arrow before you go get them, you take (or at least should take) at least 45 seconds between shots without any stress on your body between shots. Do you do that in a gym?
The action of rowing in a gym has some similar demands to archery, although more of the body is involved in rowing than archery. Would you ever consider limiting yourself to just 70 rows? You may never want to shoot a lightweight enough bow that you could shoot 1,000 shots in a session, but you would probably consider rowing 1,000 strokes in a session. It's all a matter of weight and stress.