two month old sleeping question

I just switched formula to lacto-free and last night and the night before my 2 month old has been sleeping through the night. I should be thankful but I'm worried (he had an earlier stint that had us in the hospital for a wk when he was 2 wks old).

He takes about 4 oz. at 8:30pm and this morning I "woke" him up at 6:00am. Is this normal? He wasn't lookin to eat at all and when I fed him, he only took 3 oz. and then fell back to sleep. He doesn't have a temp and the only weird thing is that he gets what looks like a rubbing rash on his cheeks and chin but it comes and goes.

Yesterday he was alert and up most of the day (catnaping for 1/2 hr. here and there). He would also eat 2-4 oz. every 2 hrs or so.

Anyone else have the same experience? Is this normal or should I call the ped. again?

TIA

Re: two month old sleeping question

my daughter started sleeping through the night at FIVE WEEKS old.

Re: two month old sleeping question

o.k...so I shouldn't be worried...

I know it's a weird question but my older son wasn't a good sleeper (up every 2 hrs or so at night for almost a year)

Since my new li'l guy is so different...(and gave us a scare at 2 wks) I'm very paranoid and just don't know what to expect....

Thanks for sharing your
experience(s)...it's helpful.