breastfeeding and baby sleep?

My little boy has just started given me a wonderful gift of sleeping longer each night! First it was 4 hours, then 5 and now 6 hours in a row! My question is will my supply be affected by his longer sleeps? He cluster feeds before bed, feeding maybe every hour and then wakes once during the night and early morning for feeds, but will my supply drop now he's not feeeding every two hours at night?