Is 1hr15min nap normal?

[sydneyrose22]

I'm confused, if one sleep cycle is 45 mins long and my 6mo ds is waking up after 1hr15m, does that mean he isn't completing two full sleep cycles?

[sparklewings1984]

Some babies have shorter sleep cycles, mine seems to do about 39 minutes (very precise!) so could just be that your LO has 37/38 min cycles so 1hr 15 is 2 cycles. Back in the day when my LO would sometimes nap through more than one cycle we would get 1hr 17-1hr 20 min naps as 2 cycles.

I think average is a 40-45 min cycle.

[creations]

My first thought would also be as sparklewings has said, the length of the sleep cycle.  Unless you have been observing your LOs sleep cycle length since birth or a few months and know that the length is not 38mins.
I believe Tracy said at 6 months the sleep cycle begins to lengthen until it becomes the length of an adults. from reading many many threads on the forums I've never seen a lengthening sleep cycle for a 6 month old but it must happen at some point because by around 12 months most seem to have longer cycles.
You could watch your LO through a nap, you would likely be able to see the first transition to time it.

[jessmum46]

1h15 can also be an UT nap....