@happywifehappylife idk if i’m just overlooking something but - did you mention whether you’re supplementing your B vitamins? there are many many causes of anaemia besides iron deficiency, and you should know what the issue after your blood test. don’t start taking any supplements or overhauling your life before you really know what’s going on.
the options are most likely not limited to A) eat meat or B) die. i’m sure there are exceptions to the rule, but for the most part there is usually the option to supplement in whatever form most fits your particular absorptive capabilities + is acceptable to you.
if you have a deficiency, supplements exist for a reason (as many have already said) and you can add in dietary sources as you please because variety is good anyway. if your doctor refuses to accept trialing a dietary supplement over a dietary change, it’s worth seeking a second opinion. your wants do actually matter and are valid, and it’s fair to try a supplement before changing your diet if that’s more acceptable to you. that’s not to say you should ignore your doctor’s advice and freeball it, but it’s fair to want a doc that cares about your preferences and wants to provide the most reasonable, sustainable form of intervention.
but anyway sorry you’ve been having such a shit one. it’s always worth advocating for yourself as far as is reasonable (like, not literally life or death)