@SoSalliecanwait I did this in 2003 after 7 years at home. I got dd settled into reception first and then applied to do invigilating at a local college. It got my foot in the door and I had good references from the exams team when an 18hpw job was advertised.
Before the interview, which I knew would have a task, I practiced mail merge in word and sorting data in excel. I got the job.
The pay was very low compared to what I earnt previously and I started back at the very bottom, in a new field, which I had already identified as a good route to a second career as I had no degree and no professional quals. There were many times I had to bite my tongue hard.
I had to do ot in my "own" because DH is a workaholic (surgeon/pilot genre) and unable to pick up any slack. Personally I found working part-time very hard - you don't feel able to subcontract as much as you shoukd because you are only part-time. Drop DC to school at 8.45 and 8.55, dash to work for 9.15 - 2pm, dash home and empty dw, w machine, quick tidy, dash to school for 3.45; brownies, swimming, tennis, etc., and teas, cook tea, homework, chill, baths, bed, get everything ready for the morning, dinner fkr DH, shower, bed, rinse and repeat.
After two years I got a promotion which meant full-time and we got an au-pair. Full time was much easier but after paying the au-pair, I broke even. The following year, they paid for my professional quals, college 2 to 8pm one night a week but I had to make up my hours and there was the equivalent of about an additional six hours of study per week. But I did it, how I shall never know. For my 50th, DH paid for me to do a p/t masters based on my dissertation.
7/8 years later I was deputy head of service, then head, then director.
It has been hard work but I don't regret a minute of it and I think it made our marriage stronger because it moved me out of mum mode.
DH was suppprtive emptionally and intellectually but not practically but that was just the way it was and when I went back to work his earnings were multiples of mine.
I'm 65 now and planning to retire soon. The greatest impact had been on my pension.
Good luck. It can be done.