baby girl not sleeping

Little girl is nearly 5 months and will not nap during day for longer than 10 minutes. Maybe 3 times a day and it's driving me mad. I can't seem to get anything done or spend 1on1 time with my 4year old son. Any advice would be appreciated. I have spoke to health visitor but they just say it's fine. I don't like seeing her so grumpy all the time because she's not had enough sleep 🙃