Have you thought about expressing?
One way of giving your partner a rest and letting her have a longer sleep is for her to express some of her breast milk. That way you can take over one of the night-time feeds, which can make a huge difference. It also gives you some special bonding time with your baby as you hold her close.
Some women find expressing breast milk difficult or painful so this isn't always an option. But if she can’t do it, it's best to wait until your baby's 6 to 8 weeks old. They need time to get used to feeding from the breast first.
There’s still plenty you can do
If expressing isn’t an option or it’s too early for do so there is plenty you can still do. For instance you could do some of the jobs around the home whilst your partner is breast-feeding. Spend time with your baby, have fun, give them lots of cuddles and take them for walks. This will give your partner time to rest, help you bond with your new baby and ensure you don’t feel like a spare part!