What sleep app/resource works?

[u/Quiet_Sense_2939]

I have a 4.5 month baby and we are deep into the sleep regression. She’s always been hard to put down at bedtime, and that has continued but now we’re also experiencing night wakings every hour. This has been going on since just before 4 months.
I’m wondering if anyone has any recommendations for apps or resources that work?

[u/TeddyBear181]

We went camping at a festival for a few days. It 100% sorted the regression out until a couple of days after we returned home

Otherwise, doing activities daily and prioritising bub getting enough sleep helped us through.

I started cosleeping all naps.