krex78,
i think maybe you just keep trying or give him about 1 hour after his solid but not the full amount, maybe half or 3/4 of his usual.
yu ze have been taking a long time to drink now too. he used to finished his 170-200ml night feed within 10-15mins. now he will drink only 80ml then auto reject and starts crawling, standing around the cot. he is very accurate one, sure to stop at 80ml. like he got internal measuring cup in him. then i will continue to feed him a bit a bit when he is standing, take about 20ml. then about 10 mins later, put him down again and try. sometimes, another 80ml. sometimes, reject. so he can take up to 30mins to finish about 150ml - 170ml of milk depending on his mood. we think he is 'hong xin', want to play so don't want to drink. lucky he is still quite attracted to his mobile, so when i on the mobile for him, he can lay still and drink a bit. but this doesn't work sometimes. in between feed of his solid, i will only give 120ml. sometimes, he drink 80ml only.
maybe its due to teething or just playful. don't prepare a lot at one shot cos very waste if he don't want especially for bm.