I don't get up to every cry either (I wait until it has gone on for 30 seconds without stopping before I go in but only in older babies, over 6 months) - babies have sleep cycles and they can stir during their sleep cycles. If they are picked up and disrupted every time they stir during their sleep cycles, they can learn to wake up entirely between sleep cycles which might be why your bub was waking up 6 times a night.

I did do a sleep school when my DD1 was little because we were desperate and had no support or anything. While we don't do the CIO stuff the way the sleep school said to anymore - we do co-sleeping and a range of other gentle parenting techniques to calm our babies down now, I don't think the information that they told us about babies and their sleep patterns is entirely irrelevant.

The sleep school suggested waiting 30 seconds before going in because often babies will stop crying within 30 seconds if they are self settling. They say 30 seconds of continuous crying though so if they stop crying during the 30 seconds, the time starts all over again. I don't watch the clock too much and I don't restart unless there is a long pause in their crying. I can kind of tell from listening to them for a little bit whether they need me or whether they will go back to sleep on their own.

As far as daytime sleep goes - I don't think it will confuse her too much. Does she often wake up and then go back to sleep during a daytime nap? If she learns to self settle at the end of every sleep cycle during the night, you might find that after a few days, she gets better at self settling during the day.

I would probably give one little warning though - when my DD1 was about 10 months old, she started became really hard to settle to sleep and resettle after a sleep cycle and so we left her to CIO. We followed the age recommendation of the sleep program and did the whole 30 sec, 2 mins, 4 mins, 6 mins etc intervals of controlled comforting. In the end, D1 freaked out entirely whenever it came to bedtime and would scream if we just walked into her room to put her in the cot. We gave up with the CIO strategy because she was so distressed and started rocking her to sleep. It was a mammoth effort to get her to sleep and when we finally did, she slept so lightly that if we tried to put her down in her cot, she would wake up and scream. It took her about 5 weeks to get over 5 days of us leaving her to CIO. Her cries though were really distressed while she was crying it out and we gave up doing it because it was heartbreaking. I guess my advice is - you know your baby and you know her cries. If she is just whimpering, I don't think there is anything wrong with seeing if she resettles on her own for a short period of time, but if she starts to sound worked up at all, don't leave her. My kids have never put themselves back to sleep once they reach that stage, they always need comforting eventually and I have found it so much harder to calm them down once they get to that point. I think you probably know all that already, but I thought I would put it here just in case