Baby drinks less freezer milk than fresh -- any tips? Pitcher method to dilute maybe?

I have about a 2-week oversupply in my freezer. Today I thawed and warmed up 5 oz of frozen milk to test it out on my kid. He drank it, but definitely wasn't enthusiastic about it/left a little in the bottle. I'm aware of the high lipase scenario, but also wondering if it just tastes different from being frozen (didn't smell any different).

I do the pitcher method so my breast milk from the day gets combined and then anything left over at the end of day gets frozen.

Does anyone dilute their frozen milk with fresher milk to help with the taste? What's your process? Is there a way to fold it in with the pitcher method? Looking for any and all advice, tips, and hacks. Thanks -- love this community!