My 20 mth old drinks 60-70 ml of ebm at childcare , but drinks abt 160 ml if it's freshmilk. He's 3-5 percentile ... should I provide freshmilk in school ? Or just a few days of bm like 2x a week ? Don't know what to do with the rest of the milk tho. I'm still pumping once a day. Not confident of dropping to 0 for now , worried won't have enough

Since he is 20 months old, maybe you can ask him why, and then persuade him to drink more of mama's milk? Or u can mix (I always do when I have not enough bm) bm with fresh milk in advance and give child care. My child says fresh milk tastes like ice cream maybe that's why your child likes to drink more?

If it's the taste, u might also want to reference this article. http://kellymom.com/bf/pumpingmoms/milkstorage/lipase-expressedmilk/

Yes continue to supplement with fresh milk. Alternatively you can consider fresh goats milk. Which is the closest to breastmilk.

Or maybe give less but more frequent feeds and see if he takes more?