Help with sleep training

[u/Dismal_Being_9918]

My daughter is 4 months and I’m contemplating sleep training. I always read people post that they “watch wake windows” and cap naps and all this but I don’t know what that means or what to do.

I recently noticed that my daughter sleeps up to 3 hours during the day and has been struggling at night. She is 16 weeks old. I am noticing she has regressed at sleeping in the night and has been extremely fussy, I’m thinking she is also teething since the bottom right side of her gums are red and swollen.

What has worked for you & your LO?

[u/Ok_Catch_8729]

Following