How fast do doctors recommend losing weight after pregnancy?

This may depend on a lot of conditions, however, I found that everything happens in three 9-month phases. Phase 1: you shed all weight except a "spare tire" around your waist that is hard to get rid off if you are nursing. Phase 2: all your internal organs seem to be back in place and your waist line re-appears. Phase 3: your mental state is back to normal and suddenly you feel like your old self again. Ready to have another one, oh, sure....