Coherent Elastic Neutrino-Nucleus Scattering (CE$\nu$NS), was first proposed in 1974 and observed experimentally by the COHERENT collaboration in 2017 with CsI detectors. This interaction occurs when neutrinos scatter off a nucleus as a whole, resulting in low momentum transfer and small nuclear recoil energy. We carried out a study assuming a detector array composed of isotopes of the same element, to introduce correlated systematic uncertainties between detectors. Specifically, we considered silicon (Si) and neon (Ne) isotopes detectors, which, being light nuclei, are particularly effective for studying CE$\nu$NS with neutrinos from reactor sources. The correlation between these isotopic detectors can improve the precision of CE$\nu$NS measurements, allowing to test predictions of the Standard Model, nuclear physics, and to constrain new physics scenarios. Additionally, we explore multiple neutrino sources, further enhancing the accuracy of CE$\nu$NS measurements.