Depending on your level of experience, that could be very effective.
Without regard to protein timing and meal composition, you're now consuming something like 400g or 450g more grams of protein a week. That's a very good place to start. Your plan to ingest this at breakfast, at bedtime, and post-workout is probably the best option for supplemental protein.
With time, do some self-experimentation and find what works best for you.