Ds2 is 5 months. Around 6 weeks ago he started waking every hour at night as I was feeding him to sleep. We tackled that by managing to teach him to self settle. Hooray! He was still waking several times a night to feed and having great naps of about 1 1/2 hours morning and afternoon with a cat nap late afternoon. But suddenly in the last week naps are terrible again. He puts him self to sleep no problem but then us awake again after half an hour but still really tired and can't go back to sleep. Any tips or ideas? Being so tired is making him really grumpy and me too! I'm breastfeeding and we're on a decent eat/play/sleep routine.