Partner wasting milk - overreacting?

I’m an exclusive pumper almost 11 months PP. I used to have a nice oversupply 30-45ounces a day and would donate to NICU/other mums etc and keep a bit of a stash. I got my period back at 5 weeks PP and it never really affected my milk until I was maybe 6-7months PP. now, on average I pump 20-24oz a day. But the past few days I’ve only pumped 16-20. In now on 4 pumps as I’m back at work and life is hard and crazy right now and I’m really insecure about the amount I make. My dream was to pump until this Christmas and then keep the freezer stash for her and wean off of it. Lately baby is refusing her middle of the day bottle in favour of food but I pump it still anyway. This morning we had a 4oz defrosted back to use so I put it in a bottle for my partner to do the morning feed, I said to him “I wouldn’t top it up if she’s still hungry I’ll have fresh pumped in 30-40 mins”, we didn’t wait for all the fresh because she hasn’t had milk since 6pm the previous day and figured she’d want it. He said “I might top it to 5 tho with the other fridge milk” I said I’d rather not but if she seems really hungry then fine I guess. He topped it to 6/6.5band warmed it up She drank 3 ounces of it The rest went to waste And I was devastated. My trying to hard to keep pumping and give her the milk still because she does still drink it and I was desperate to breastfeed so when she could t latch I already beat myself up about pumping. He said sorry but it always seems like he has a more casual approach to wasting the milk and it’s upsetting. I have expressed this to him. I cried at wasting 3+ ounces. It now takes me 5-6 hours to make that much most days! And it’s not the first time he’s done it this week Am I being crazy??