You are in Destin?!! Hurricane much? Stress much? Stress can lower your supply.
Now, a 10 lb baby! I had one of those. She would feed every hour. She would feed for 45 mins, take a 15 min break and want to nurse again. I did not expect this, but mostly followed her cues and she doubled her birth weight by 3 mos.
She needed a lot of calories and the only way for her to get them was to feed very very frequently.
Every hour or hour and a half is good. Don't look at the clock. If he makes a fussy noise, pick him up and nurse him, even if it is several times an hour. How often were you nursing before? Some babies going through growth spurts will be more on than off the breast for several days to a week to boost your supply up to where it needs to be.
Are you co-sleeping? Nursing with your baby at night in bed is a sure fire way to increase lactation hormones.
Now, your ds may have been born big but be meant to grow more slowly than my dd. I doubt it tho as he wants and needs to have milk frequently. Also, an IV during birth can artificially raise a baby's birthweight, did you know that? Just in case you had one.
If he wakes up when you put him down, don't put him down. Wear him in a sling for his naps. He will stimulate your supply just by being more skin to skin with you. Take yr top off and just have him in a diaper.
Force youself to eat. Drink at least 3 liters of water a day. Pay attention to food and drink.
Just don't look at the clock. Get a big plate of food and a huge sport bottle, sit on the couch, pop in a good movie and nurse, nurse, nurse. Take an afternoon nap. This will increase milk. Skip housework. Ask for help with that. Use breast compression. Continue to pump between feeds if you do have a break.
If your LLL Leader does not have good ideas for increasing milk, ask her for the number of another Leader. If she is also not as helpful as you would like, ask her to let you talk to their Area Professional Liason Leader. She has more specialized education than the average Leader.
You also might weant to have your thyroid checked, what with the long spotty period.
Read this :http://www.kellymom.com/bf/supply/low-supply.html