I think you are doing a wonderful job breastfeeding your boy! The fact that he got only breast milk until he was 6 months old is awesome...way to go Momma! It is natural for a baby who starts on solids to nurse less often. It sounds like he was needing more calories right before you started solids and so your milk supply increased to meet that need. Now that he is starting on solids, some of those calories are being met from the food he is taking in as well as the breast milk. My suggestions would be to offer him your breast before every meal. This way he is getting your nourishing milk first and then the solid foods. I would then wrap up his meal by offering your breast again to see if he needs a little to top-off. Don't worry about loosing your milk supply...it is perfectly balanced to regulate according to demand. Your are currently engorged because the demand before solids was a lot greater then it is now...it will re-adjust. In the meantime you can also hand express some of the milk just to take the discomfort away, but don't do it completely, otherwise your body will continue to produce more than it currently needs. I hope this helps!
Thank you so much Mommas! I have been pumping a little bit after feedings that he takes less of my milk. After a few days now it is less of a problem. He really enjoys his solid food but I only give it to him once or twice a day, after he has nursed. I am so glad that I have you all to lean on.