No.
Next time, build drains.
When you are feeding that heavily, you have to flush before harvest or your buds will taste chemmy.
From now until harvest, you have a dilemma. You can give only water adjusted to pH 6.8, or you can keep feeding bloom ferts at a weaker level. Ferts with no drainage is going to contribute to burn, but water won't give extra bud mass. I'd go with water and a MINIMAL amount of bloom fert this week, and then nothing but water until harvest after that.

Just out of curiosity, how did you get a runoff ph/ec number if you can't flush?