Can't answer the first Q as I was only off work for a year, and went back to same employer, but for the second Q:
Try and get flexible working if your job suits. Everyone has the right to ask their employer to consider it. I work 95.5 hours a month, over 3 days, but it does not have to be Xam to Ypm, just needs to add up every month (as long as I am in during "core" hours). This lets me build up credit when DH is at home and can take DS to nursery (his journey to work is much shorter than mine), and use it when he is away.
Try going back part time first if you can.
Get lunches, clothes and bags for you and DC sorted every evening.
Do all your ironing for work clothes in the week at week ends.
Lots of lists - what to do at home, eat for tea, food to buy, do at work. If you have an office job, learn about Outlook task manager and use it, use it, use it.
Set an alarm on mobile phone half an hour and fifteen mins before you have to leave.
Internet shopping for everything!
Slow cooker - overnight for morning porridge, during the day for evening casserole.
Don't be houseproud.
Use your lunch break to get some to yourself.