Hi Jordan,
I believe that the DWP are guided by the university as to whether your course is classed as 'full time'. if it is classed as full-time by the uni, then it will also be classed as full-time by DWP. Don't forget that actual face-to-face tuition is only a small part of the time needed to study at degree level.
Nothing on this board constitutes legal advice - always consult a professional about specific problems