alteration in LIC of India Jeevan Ananad Policy?

I am in Gulf, I have taken a policy of LIC Jeevan Ananad in Oct 2005
Policy Coverage INR 24,50,000/- for 25 years. semester premium is INR 61,522/-

(1) now due to volatile situaton in my income level i feel difficulty in paying the premiums.
(2) also dumping (2 x 61522) in a year; more than 1.2 lakh is almost all of my savings in a year.
will LIC allow alteration in the policy.
i would like to alter it as semester premium of not more than INR 20,000/-.
i am married & an Engineer and my NET income is arround INR 12 lakh per annum.

pls advice.