I am in my second year of cycling as well and experiencing a similar slump that you have described. I am very dissapointed in my mileage so far this year, but like you; circumstances beyond my control have led to decreased time on the bike. I know it will get better. The quality of my rides has improved a lot this year aka club rides, charity rides, etc. Its the personal training rides that I went for in the first year that I haven't seemed to have time for this year.