Pumping Sessions- which to cut??


Hi all! I’ve been exclusively pumping for the past 6 months ... (since my now-9 month old daughter started refusing the boob at 3 months old). I have a good supply so I only pump 3x a day: first thing in the morning (around 5am when I wake up), at work around 12-1pm, and when I get home around 7-8pm. I am ready to cut out one of the pumping sessions and will supplement with formula, never going below a ratio of 50% breastmilk to formula per bottle. My question is- which session do I cut? I’d love to cut the morning one so I can sleep a bit later, and if I did I’d probably move the 1pm one up a few hours to 9 or 10am. I don’t know if that’s the smartest decision though (will I be too engorged? I get the most milk from this session, will that stop when I move things around!?). Do I cut the midday one so I can stop bringing my pump to work? Anyone who has gone through something similar, what’d you do?? Thanks!