Hi Virshu. I can understand that the developer team wants to address the worst code smells first, to reduce some technical debt of the overall code.
Since copying or activating a rule twice (with different parameters) is not supported, an approach I recommend is to adjust the threshold for complexity when activating the complexity rule for your quality profile. Once developers have refactored the most complex methods, revisit this setting to lower the threshold to normal.
A benefit of this approach is that having just one threshold makes clear the action developers must take with new code under review.