Sorry if this has been done a million times before.
After ds had his 8 week injections he slept a lot but was still feeding etc.
He had his 12 week injections this morning 
he had been awake pretty much all day, fell asleep at 6.30 and has slept pretty much solid since, which is unlike him as even when over tired he will wake a bit more than that. He has also been having slightly smaller feeds, he usually has 4-5 oz every 2-3 hours but has been having 1-2oz.
Does this sound normal after second injections? I heard they are a bit more rough for them than 1st.