Correct Do's And Dont's After A C Section

I had my baby on the 22nd August, and it was a c section. I have heard different do's and don'ts from people regarding the after care of yourself and regarding normal household things. But would like an opinion from members and some professionals here.
I live with my in laws in our own building with three floors. Our bedroom is on the third floor, but main lviing area is joint on the first floor.
My overall condition is well, my stitches were all fine and taken out on time. I dont feel any pain or stress in my abdominal area.
2 weeks ago I asked my gyno if i can climb the stairs she just just once a day.

1. When can i do normal climbing of stairs, like 4-5 times a day?

2. Can I do normal walking in the house like for 45 minutes?

3. I was given bedrest from the start of my pregnancy and have put on so much weight, and I am very eager to shed this weight in order to be a least fit into some of my clothes. At the moment none of my clothes fit me. Is it necessary for me to have 1500-1700 calories a day if I am breastfeeding?

4. Can I not stick to a healthy eating and have a no carb dinner at night. A typical day would be:

Early morning
milk and 1 rusk

Breakfast
2 eggs with one brown bread/2 roti with dal or sabji

Lunch
veg dalia

Snacks
fruits and milk

Dinner
Dal and salad

Also a large glass of protein powder.