We had a similar sort of problem with waking constantly, up to 10 times a night until Zander was around two years old. We found a combination of Braur's Calm (only ever one dose before bed for us) and Healing Hippo Sleep Spray was really really helpful. The Brauer's is basically like Camomile tea & is meant to relax them & the sleep spray is aromatherapy oils designed to promote relaxation. Either on it's own wasn't great, but the two together made a huge difference. When we used the spray we'd make sure his pillow was sprayed each night so the lovely oils would help him drift back off if he did wake.

Good luck hun, sleep deprivation can be a killer.