Can You Start Breastfeeding Again After 8 Months Of Not?

Just curious.. if you have no milk left and it all dried up 8 months ago can you resume breastfeeding or is it too late?
And is 9 months old to old to start breastfeeding?

I’ve Been On Bc Shot For Two Months And Also Breastfeeding. How Likely Is It To Be Pregnant Agian?

I’ve been on the Depo Provera Birth control shot for two months now and I’ve had one period on it and now I’ve missed my last one. I am also breastfeeding my eight month old. I am very nauseous and emotional. How likely is it that I am pregnant again?