Just dial things back and use less light, EI is flexible. I change the water once a month here:
Note, I did not write the EI article here.
I make it clear that it is merely an example and a good one for maintaining proper care.........ADA also suggest a similar water change frequently independent of EI and most folks that have nicer tanks tend to take frequent care of them and keep them clean.
That said, there are examples where folks try to avoid them with bad results, as well as good results.
Non CO2 methods are simply put; the ultimate in low work and virtually no water changes, the trade off is fewer plants species can be kept together and slow growth.
If you use the low light + CO2, + sediment based ferts, then you can extend water changes to 1 month at say 50%.
I dose about 1/2 EI to this tank.
You can simply dose less a little bit each week till you note a negative response, then return the last prior dosing. The plants should tell you what that rate is fairly well specific to your aquarium.
If you are neglectful or hate water changes, go for the emergent growth or non CO2 methods.