I have a 9 month old boy and have experience the same thing with my milk supply being low, I was stressing out so much that it dropped even more. I did notice that it started to drop once he started solids, I work FT and pump twice every four hours while at work 3-4 oz and once at night once he is asleep. I supplement the 4th bottle with formula, which he does not always intakes, he is not always finishing the 20 oz of breastmilk and formula I send to daycare. He is eating solids 3x's a day. Breakfast with dad (yougurt and cereal), lunch (at daycare) consist of Jar food with cereal and dinner consist of what we are having for dinner or vegetables prepared at home, a piece of toast which he loves to knaw on. Also at daycare and home he is drinking 3 oz of water a day,I recently started to add 2/3 juice and 3/4 of water.
Also at nights he used to do the same thing suck, suck, stops. I used to feed him laying down, now i make it a point to sit and feed him and make sure that he is not to warm so I remove his blanket so that he is awake and eats, it has worked for me because now he only wakes up once a night and has a good feeding.
Good luck, and remember the key to breastfeeding and milk supply is relaxation, don't stress. Relax and let nature take it's course. Your baby is eating, although it may feel he is not, I have been there. Oh and remember drink a minimum of 8 oz of water while you are pumping, it's a miracle how much more you can pump.