Milk drying up?!

My baby girl is 6 months old and a champ breastfeeder. Since yesterday, I feel I’m not producing much milk and last two times I pumped, I only got 1 oz of milk!! (Compared to the usual 6-8oz) I’m worried, sad and not ready for it. I love breastfeeding, it’s beautiful and it makes me feel as if my baby and I were one again. Possible reason: I’m a bit stressed because we are moving houses.

Any suggestions?