Do as much as you can. Every step counts. If you're just starting out, start with 10 minutes a day and add more little by little. Work up to 10 minutes at a time, three times a day. You can also try for 15-minute spurts twice a day. Also if you don't have enough time to do a complete workout then you can just walk
You should at least eat healthy so you are still losing weight at a small pace but still doing it. Make sure you do work out though beacause it is really healthy for you.
I'm no expert at all so don't take my word but number one looks like it will make the most sense. Because it has the word reproductive system and yeah...