The estimated time to fix the electric cable is over 6 months. Underwater fibers have been quicker to repair as was with another recent case. Electricity exports from Finland to Estonia went down pretty significantly due to this. Estonia was to stop importing electricity from Russia within 1-2 months so this is Russia being Russia as we (Finns, Estonians et al.) know here living next to it.

EDIT: Hamuko basically said the same thing earlier, did not notice