Breastmilk question

Is it ok to put now breastmilk in with old breastmilk
say like I get a 2 or 3oz that is just 2hrs old and I put 2 or 3oz in with it

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Rebecca VanEckHinesville, Georgia
07/13/14
Rebecca VanEck
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About Rebecca VanEck
Born: Honolulu, Hawaii
Current: Hinesville, Georgia
Birth: June 07
On Moms.com since: Mar 24, 2014
I'm name is Rebecca and I'm a stay at home mom and Army wife. I have 2 girls and 1 boy Anela James and Rosalee. I'm from Hawaii