Midwifery is a 4 year course. You get summers off but during term time you will be on the wards 50% of the time. That means weekends and nights.
It's not impossible by any means but realistically the only parents who do it have a lot of support from grandparents.
Also there is a Back To Education allowance which is great as it's weekly and really helps, BUT to get it you need to have been seeking Job Seekers Allowance (or Benefit, can never remember which) for 12 months prior to the course commencement. As you claim nothing, you will he entitled to nothing. You are not "available for work ".
Regardless of what ever course you end up doing, I would get on social welfare pronto.