How do I know if baby is finished on one side before switching? When feeding my son (who is 2.5 weeks old), I have been offering him one breast and then letting him feed until he pulls off, which is usually about 10 minutes or so, and then offering the other side.  He usually nurses longer on the second side though, and it's not always as enthusiastically as on the first.  Is this what he should be doing, or should I put him back on the first side for longer after he pulls off?  I had read that he should be draining the first breast before moving on to the second and I'm not sure how to know if that is happening.