Mel, my DD is now 6 months old. She used to sleep through the night beautifully until she hit 4 months old, then she started to wake frequently through the night wanting extra feeds. Luckily this has settled down, but she still doesn't sleep as long overnight without waking for feeds. We follow a feed (BF), feed (solids - just started so only a small amount), bath, cuddles, bed routine. We do this routine to coincide with a BF that falls anytime after 5pm (sometimes slightly earlier). So no set time but it does occur early evening everyday. Before 4 months of age she would go to bed and sleep through, now she also wakes between 9pm and 10pm for another feed, then she will wake up sometime between 3 and 5am, then back to sleep until usually around 8am. We bath her everyday and have done since she was born (we have gone maybe 4 nights without a bath as it became part of the bedtime routine and it seemed to work). We have not had any skin problems. Also, she loves her bath as it is a time for her to be nude (she loves this) and kick around in warm water. Sounds like you are doing a great job, as for the waking I think that may just be a thing they do at 4 months.