i don't know the age of your child. Younger bubs tend to wee tiny amounts, but often (due to the size of their bladder). Older bubs wee less often but larger amounts.

When my child slept in my bed, i kept the nappy change mat, wetbag, wipes and a night nappy NEXT to the bed, in arm's reach. So i could change her (dream change) very easily, in low light, without leaving the bed (if a change was needed).

when she was a nb, i used malden mills pocket nappies with bamboo trifolds inserted. (bits for bots make these fleece pockets).

when she was about four months old, she needed dedicated night nappies, and i started using Kester Kovers AIO, fitted night nappies with handknit woolly covers or MM fleece covers e.g bear bottoms pullup covers (machine washable, dry fast, no snaps or aplix to bother about in middle of night).

we never had to change the bed linen due to leaks, so i am sold on night nappies.

when she was a newborn, i put a Swaddlebees Mattress Protector, on top of the quilt (if cold), on top of sheet (if hot) for her to lie on, and us to breastfeed in bed, on. The mattress protector was great for catching MY leaking milk, and the one time she projectile vomitted in bed. but we didn't have night nappy leaks.

dunno if any of that is of use to you, but that's what we did.

the baby beehinds fitted nappies are day nappies, and we used them in the day. she weed thru them in two hours easily, even as a tiny bub.