New to Vyvanse; Does the sleep trouble go away?

I've been on Vyvanse 30mg for 10 days and I'm only getting 6 or 7 light hours of sleep a night. What's worse is I have a baby and I'm on the hook for 1 night-time wake-up & feeding, so it's interrupted sleep on top of being light.

Anyway, can anybody reassure me that yes there's sleep trouble at the beginning, but after a few weeks, you were able to sleep 7+ hours reliably?

I take my med around 7 or 8 am every day. I have a fast metabolism and when I was on Welbutrin, I was able to sleep fine after a month.

Just looking for some reassurance that this gets better because the med is super helpful during the day. Thanks.