Epidurals can cause issues for WEEKS after the baby is born. It takes a few days for mama to get rid of the meds from her system, but it takes Weeks for the baby to be rid of all the meds. Breastfeeding problems are common for epidural moms (not All obviously, but a Lot).
Babies are always super alert immediately after birth for about an hour or so. Then they go to sleep for a long time, but not as long as epidural babies do. I noticed a Huge difference in how sleepy Abel was compared to my natural birth babies. They all slept a long stretch after that first hour, but then woke up to eat with no problem. Abel was Hard to wake up and get him to nurse. Even if he'd have had a good latch, he would have been extremely difficult to wake him to feed for those first 2 weeks or so.
My DD had the same issue~ her baby was so tired she couldn't get him to nurse for days... until her milk came in, then her baby was a little more interested in eating. She was extremely nervous there for his first 3 days because he wasn't really eating.