DS is 19 months old. I went back to work last year when he was 8 months. I was full time (35hrs) but doing a compressed week so had Mondays off as well as the weekends. This worked well for us, DS went to nursery which he loves 3 days a week and to his Nana's (XP's DM) on Thursdays.
Before xmas it was announced that my department was closing and I was facing redundancy. I thankfully found another (better) job at the same company but it is not a flexible role and I need to be there Monday - Friday 9 - 5. Although my days are little shorter, TBH I'm finding this shift much harder. DS now stays at his Nana's Wednesdays and Thursdays, (sleeping over night as its a 45 min trip each way). It's nice to have an evening to myself but I do miss him. He's in nursery Mon Tue and Fri.
My weekends seem to fly by now that I don't have the Monday off and I feel tired all the time. With housework / shopping etc to do it's difficult to ensure that I spend enough quality time with DS as it is let alone have any kind of social life / opportunity to meet someone outside of work. 
So after a but of a ramble I was hoping to find someone out there in a simalar situation or just ask working parent for advice / tips on making things work :)