Agree - the plant will either put out new foliage or die, regardless of the amount of light you give it. The only thing you have some control over is how fast that happens. I recommended letting the plant go dormant while you're getting the aphid problem under control, and I haven't changed my mind about that. However, if you don't want it to go dormant, just keep feeding/ferting like you have been, as well as giving it as much light and warmth. You don't need to increase these things, and keep in mind that if you did a severe enough pruning, the plant will appreciate you not going overboard to give it some time to recover.