Well, first I would suggest that you do the necessary calculations to determine whether or not your application has a problem.
1. Count the number of full-time weeks (any week that included 37.5 hours or more).
2. For all part-time weeks (any week with fewer thant 37.5 hours), add up the hours, then divide by 37.5 - that gives you the number of full-time equivalent weeks.
3. Add the full-time weeks and FTE weeks - if you have 104 , then you're OK. If not, then your application will probably be refused.
If you don't have the experience, you could withdraw your application and re-apply under the new rules. Be sure that you obtain an up-to-date letter of employment.