Gosh i didn't even think that was classed as sleeping if under the two hours!

My DS2 at 3.5months is lucky to sleep during the day unless i lay down with him with boobie in mouth, otherwise he will just catnap as you said for half hour couple times a day. I'm glad i'm not alone...i was starting to think this child of mine was out of the ordinary. However he is always in bed by 7.30-8pm...then it is mummy time!
I must have been so lucky with DS1 who is now 6 as he would sleep all night then have a two hour morning and afternoon sleep and still be in bed by 8.30pm......i could slap myself for not realising how lucky i was.