This is called wake to sleep. I was successful at using it for two kids and not only for naps, also for their sleep at night. Found it in 'Secrets of the Baby Whisperer: How to Calm, Connect, and Communicate With Your Baby', by Tracy Hogg and Melinda Blauckay1980 wrote: ↑Sep 28th, 2017 3:08 pmThere's a trick that I read online about get longer naps. When my son was about 6 months, and during the noon-ish nap, he would wake up after 45mins everyday. So at 40 mins, I would go in the bedroom and wait till I see him start moving like he's about to wake up but eyes still closed, then I would rub his back and make shh sound to make him fall back to sleep. I did this for about 5 days until he stopped waking up after 45mins. He slept for 2 consecutive hours after that.
OP, I suggest preparing your self for a rough two weeks and put the baby on a schedule. Might even be less than 2 weeks if the baby adjusts easily.
This is the book I followed, EASY method. I found it helpful to have a guide. The schedule allowed me to have some sort of routine and was able to plan housework and have naps myself.
-To make any methods successful both parents have to be on board. That was the harder part.