Purdah

Breastfeeding one's baby in front of a toddler

Q: Is my 2.5 year old toddler allowed to see my breast? 

I have a 3 week old baby and my milk supply is low. I have been advised by lactation specialist to let baby suckle as much as possible to increase my supply, minimum is 30 min every 2 hrs. But my toddler only sleeps 1 hour some days. I am alone during the day and nowhere to put my toddler every 2 hrs. 

So my question is, am I allowed to breastfeed my baby in front of my toddler?

Women's dressing at home

Q: I wanted to ask a question regarding the dressing of women in their own homes. In my house we have our own gym area where me, my mother, and sisters exercise. While exercising they usually wear shorts that go till the knees and a low cut tank top that shows their cleavage. Their nipples are sometimes also visible sometimes. Is this allowed Islamically if there is no fear of fitnah?