E.F.
I agree with Judy-- if he's having enough wet diapers (every 4 hours or so) and he's happy, I'd let him lead. However, you may need to pump to keep your milk up-- at 1x a day, you may not be making very much.
I used to mix a scoop of formula into baby food to sneek a few more calories in. The other thing I found is that my baby is at a stage where he will only feed himself-- he doesn't want yo to do it. So maybe bite the bullet, strip him down, and put him on a towel or plastic sheet and give him the food. It is going to be messy, but some of it will get in him.
Just keep an eye on those diapers to make sure he isn't dehydrated!