It seems like the injection version requires a ridiculous number of office visits and is probably not worth it unless you live right next to your doctor's office?
Once or twice a week for the first few months, depending on how quickly you want to be done with it, before tapering off into maintenance injections (which eventually stop being necessary), which makes sense if you live in a city. I think for many people the trade-off would be worth it of even a decent drive, given the cognitive benefits of being able to breathe and reduction in suffering over time.
My friends are starting to sniffle and sneeze every time we speak, signalling it's finally the worst part of the year: The latter half of Spring, where most of the allergens that you'll be dealing with for the year are finally starting to make themselves apparent.
Did you know that you can opt out of allergies? Well, seasonal ones, anyway. In four months, for about a thousand dollars,[1] it just... won't be an issue anymore. Mostly.
The most common method in the US (because it's covered consistently by insurance) is subcutaneous allergy shots (subcutaneous immunotherapy, SCIT), but if you're afraid of needles, there's also tablets and drops you can take (sublingual immunotherapy, SLIT). Some of the tablets can be covered by insurance in the US, but at the present time drops don't seem to be. You can get drops via Amazon's primary care service, apparently, but I haven't tried it, and don't know what the costs associated would be.
SLIT, despite its relative lack of acceptance by the US FDA, is effective: SLIT has been fairly standard in Europe for a long time, to good success.[2] It's not necessarily better than SCIT, but it doesn't seem significantly worse for most cases.
If you're particularly adventurous, the same principle ("expose yourself to small, but ramping, amounts of the allergen until you no longer have a reaction to it") seems to work for food allergies, too,[3] including for relatively significant ones, like peanut allergies.[4] However, the severity of most food allergies, and the extremely low dosages required to cause a significant reaction with many of them, is such that you probably shouldn't try to self-administer this. Some people have had success with it, though.
Given costs and inconveniences are relatively low (the price of a new laptop, or a sufficiently-cute synthesizer), and seasonal allergies are so severely life-affecting on a daily basis, you should probably consider it. If you do thought-intensive work, the increase in productivity will likely pay for itself, to say nothing about the reduction in suffering.
In America, assuming subcutaneous immunotherapy and two shots per week during the dosage ramp-up.
https://pmc.ncbi.nlm.nih.gov/articles/PMC10788274/pdf/main.pdf
https://ajcn.nutrition.org/action/showPdf?pii=S0002-9165%2823%2917380-1
https://www.jacionline.org/article/S0091-6749(10)00726-8/pdf