My DS was not a great sleeper. During the day he would rarely sleep for longer than 45 minutes. He would wake after the first sleep cycle and refuse to go back to sleep. It was a different story if he was on me though. I'd suggest to keep practising with the hug a bub because it was amazing. DS would fall asleep in it and stay asleep for hours. I would even put it on before going out, drive wearing it in the car, so I could just pull him out of the car and into the hug a bub.

I wish I could tell you that he learnt to sleep better quickly, but his day naps stayed short (although he kept having two naps a day until he was well over 1 year old), and he would wake every 2-3 hours over night for breastfeeds until he was about 16 months. Then it went to 1-2 feeds during the night until the month before my DD was born. He was 19 months then, and has been sleeping perfectly through the night since then. He co-slept in our room (in a cot that had it's side off and was flush with my side of the bed) until he was about 14ish months. We only get the very occasional night (like last night) where he wakes crying and needs one of us to go in to his room to resettle him. I think that he might sometimes have nightmares that causes the wakeups.

My DD is a totally different story. She started sleeping up to 6 hours over night the week she was born, and she sleeps up to 7 hours in a row during the day! I'm amazed how much I miss her while she's sleeping!

When she's awake and I want to play with my DS as well, I try to play games that she can be involved in. Sometimes we put the Wiggles on tv and all dance (me holding DD), or we do things sitting at DS's table, like puzzles, the matching game I made with his little animals and photos of them etc... That way I don't feel guilty about not spending enough time with him. That doesn't mean I never have those moments when I feel like I'm neglecting him though!