First of all, you should always consult your health care provider (HCP) before changing the dosage of any medication.
Secondly, any answer I give you should also be discussed with your HCP, as my advice would only be a recommendation based on my experience in the medical field.
As with any question, before it can be answered completely, more details must be known, such as What do you take Klonopin/Lyrica primarily for? Do you take klonopin for anxiety or insomnia? Do you take Lyrica for fibromyalgia or some other sort of pain, and what kind of side effects do you have with each medication? What other medications do you take and what other health problems do you currently have?
I am an expert in this area, I deal with these issues on a daily basis and I will be happy to give you an answer, but I will need more information in order to do so.
Also, please clarify whether the Klonopin is actually 2.5 mg or is it 0.25 mg?