We generate new AdS₄ solutions of D = 11 supergravity starting from AdS₄ × X₇ solutions where X₇ has U(1)³ isometry. We consider examples where X₇ is weak G₂, Sasaki-Einstein or tri-Sasakian, corresponding to d = 3 SCFTs with N = 1,2 or 3 supersymmetry, respectively, and where the deformed solutions preserve N = 1,2 or 1 supersymmetry, respectively. For the special cases when X₇ is M(3,2), Q(1,1,1) or N(1,1)_I we identify the exactly marginal deformation in the dual field theory. We also show that the volume of supersymmetric 5-cycles of N(1,1)_I agrees with the conformal dimension predicted by the baryons of the dual field theory.