I did almost identically that with the Shimano road hydraulic and now the back brake felt as sharp as the front.
I suppose it's not too different to using a smaller bleed block - except it accounts for pad wear.
I did it with a bit of risk by using a contaminated pads and leaving the wheel in place instead of a bleed block.
Squeezing the levers to push the pads in a bit more without the rotor also helped tho.
@Howard started
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I did almost identically that with the Shimano road hydraulic and now the back brake felt as sharp as the front.