Agar-gelatin co-hydrogel was investigated over a period of »30-days by dynamic light and small angle neutron scattering, and rheology to quantify changes occurring inside the hydrogel. Degree of nonergodicity was extracted as a heterodyne contribution from the measured dynamic structure factor data. From the analysis of the data, we observed two relaxation modes namely fast and slow modes with relaxation times t _f and t _s whose dependence with aging time, t_a fall on a scaling behavior given by power-laws, t _f~(t_a)^-1/5 and t_s~(ta)^3/5 respectively. Further the analysis showed the heterogeneity size (x_SANS) obtained from SANS also follows power-law behavior, x_SANS~(t_a)^-1/5. The data taken together revealed the ‘‘speeding up’’ of fast and ‘‘slowing down’’ of slow mode relaxation processes.