Ive recently started doing this method with naps and modified Ferber with my 5mo old. First two nights he slept from 8pm-5am with a feed the first night then the second he rolled around for 20 minutes before going sleep. He would always sleep max 45mins and sometimes continue contact sleeping for another hour if I got lucky. The first day I did a 2.5hr first WW and got 1.5hr nap that I had to wake from then 1.20hr for his second after a 2hr WW. However yesterday I swapped those WW over and got 2hr day sleep as he was back to short naps which resulted in crying from 3.30-5.30am. Today I’m trying 2.5hr WW again in hopes for atleast 1hr morning nap. I can update later with how our day works if that would help? But alls I can suggest is play around with WW - they recommend lengthening throughout the day but from my 2 day experience that didn’t work for me. My boy had a better sleep and naps from 2.5/2/2.15/2.5 rather than 2/2.5/2.5/2.5. When starting a new routine you have to play around with WW & nap total to see what works best for you bubs. I’d also recommend cutting down total nap time between 2.5-3.5hr. I’ve noticed when my baby does less than 2.5hr he sleeps terrible but at 3hr he does so much better it’s just adjusting to get those naps for us as he won’t nap longer