My 18 month old is in a really bad sleep regression and I just feel like I'm pulling my hair out. He's usually a really good sleeper will sleep 6/7pm til 7am most nights. The last few weeks he's been fighting his morning nap (only one he has now) and fighting his bedtime. I've tried bottle before bed, cuddles until he's falling asleep and then putting down and even letting him cry it out for a few minutes and he's just relentless. Seems like whatever I do he just won't settle for sometimes an hour or longer until he's fully worn himself out. Any advice please?