Glad to hear you're feeling better honey
I do think the routine issues could make a differences, give it a go and see what happens.
Have you recently introduced solids? I just wonder if there is an element of discomfort at all. Waking at 20 mins/30 mins into a nap can be discomfort as well as routine issues, so might be worth ruling that out. Any signs of teething?
I know it can sometimes feel as if ST is taking forever, I remember that feeling well. All i can say is to reassure you that once the routine is more age appropriate then whatever sleep training you do will be easier.
Ideally you want to aim for two naps after at least 1.5 hours each, this is two full sleep cycles for an LO of this age and is more restorative than a shorter nap. If you get a longer nap great, but anything 1.5 hours or longer is considered a good nap here at BW. If you are having naps shorter than that the idea is to slightly ahorten the next A time to put LO down a little earlier to prevent OT.
So for example, you are aiming for a 3 hour A time. So if WU is 7am, you go for the first nap at 10am. If she wakes/stirs do the shh/pat technique to help her resettle. Ideally you would continue to do this until she resettle or until the end of the nap time (so 11.30am ish). I found with my DD I knew that if I'd been shh/patting for more than 15 mins and she wasn't settling then she probably wouldn't. So if you have the same feeling with your DD then you could try for a bit and if she doesn't settle then get her up and start the next A time. So say she wakes at 11, this is less than 1.5 hours sleep so rather than doing a full 3 hour A time, try 2 hours 45 before the next nap - and put her down around 1.45pm (what level of reduction in A time is suitable involves a little trial and error so although I'm setting this out fairly mathematically, you would need to keep an eye out for sleepy cues etc and put down before she gets too tired. Then if you get a longer nap that time (more than 1.5 hours), you could go for another 3 hour A time and try for bed around 6.15/6.30.
If you get a short second nap you might put in a CN around the 2 hour A mark and then go for BT around 7.30ish.
I hope that makes sense. The "perfect" two nap EASY (if such a thing existed) would be:
7am WU
Nap 1: 10 to 11.30pm
Nap 2: 2.30 to 4.00pm
BT: 7p
Or some similar approximation. Some LOs like a longer first A time and a shorter A time before bed (like my DD), some like very equal A times and some like shorter first A and longer to bed. This is really the essence of BW, a flexible routine but based on each LOs needs.
There are some example six month routines here:
chronological EASY samples, 4-6 monthsI hope this helps xx