I weigh myself twice a week. Once, on my official weekly weigh-in and sometime in the middle of the week to see if I need to be more careful with my food or exercising.
Have you considered checking out some exercise dvds from the library or buying one and exercising at home? I understand your concern for safety since I have been a victim (twice) of assault.
I know that exercise helps period, whether you have 100 lbs or 10 lbs to lose. I think, it would also help your body heal from having had your baby recently and just help you feel better in general.
I am not familiar with that diet or food plan
but if it worked for you before, that would be encouraging to try it again.
Maybe, while the DH is at work and the baby is napping, you could exercise. I can tell you the one benefit that exercising does is increase your ability to handle stress (physical and emotional) and it will increase your stamina, which you will need in the months to come with your new baby.
Good luck!