Breastfeeding and sleeping through...

My little boy is 9 weeks old and has started sleeping longer periods during the night, he will have a feed at 11pm and won’t wake for another feed until around 4/430am. I was told by the lactation consultant to feed every two hours at most to protect my milk supply but that was at the very start of our breastfeeding journey when I struggled with my milk supply but now I’m wondering whether I should let him sleep those extra few hours or if I should continue to feed every two hours? Will my milk supply begin to be compromised if I let him sleep longer?