Yup, I had one of those. Not only regular wakings but long stretches awake. I just pulled his cot up against the side of my bed and if he would tolerate wriggling around in there I'd leave him, or I'd pull him out and know he was safe as the cot acting as the bed rail. Could never fully sleep while he was awake but at least managed to doze. I didn't cope with the exhaustion particularly well. But in hindsight I wish I'd just set aside many of the things I thought I 'should' be doing and just tried to rest and hang out with the kids as much as possible through the day instead of cleaning and doing activities and outings. Honestly, it drove me nuts and some nights I got really irate and would huff off for a while and leave DH to manage him. It's so tiring and you're less rational and tolerant at 3am. But I did try to remind myself that DDs sleep issues passed and this would too. And it did... eventually! By 11 months he was still waking but going back to sleep with a cuddle/boob about 95% of the time.