Question about pumping

I'm 4 months postpartum and husband sleep trained baby to sleep from 8pm to about 7:30am! Props to this man, I'm so thankful it worked out for us.

My baby doesn't really take the bottle so I'm nursing her 100% of the time. With her new sleep schedule, I'm wondering how long I can go without supply taking a hit? Her last feed is around 7:30pm. I also don't feel engorged or uncomfortable anymore but the longest I've gone is about 7 hours overnight. I think I've done this a couple of times but not consecutive nights. Is it sustainable for me to follow this ~7 hour stretch or even longer? I'm going to reach out to our pediatrician lactation consultant but wanted to get some feedback from other moms as well. Thanks in advance!