i also won't force my son to finish the meal. Usually we try to encourage him and maybe say "last two" "last one" to get him eat a bit more. However i'm a firm believer he would stick to the feeding schedule as much as poss (give & take maybe 1/2 hr) coz it's pretty much set in his internal clock. If you mess up feeding time, it will affect his nap time etc . . . . . .