I did it as a single parent of 4 ( 3 at primary, one at secondary).
It was hard. And I suffered alot of guilt because for 9 months I felt I truly neglected my own children.
Choose your training provider carefully, mine was excellent at ensuring my placement schools were within 30 mins of children's schools.
Then make it clear to your mentor at each placement that you'll work hard, but that your children will come first. Again, my placement schools were brilliant at accepting that I couldn't be at school at 8am, but that I would ALWAYS be there by 0830am.
Don't try and compete with the youngsters who can work 8-6pm.
Accept that you will need to work every evening and weekend during training. But do so knowing that it's not forever and once you're qualified you have much better control over work life balance.
It was the lowest part of my life, I contemplated giving up in the February because I was crying so much, struggling with behaviour management and work load, but... 4 years later, it was worth it.
Once qualified I worked 0.52 of a timetable and gave back the time I'd neglected my children.
4 years later I've found great balance at working 4 day week, using my day off to ensure I don't have to work weekends.
Teacher recruitment is at all time low, use the fact they NEED you, to strike a hard bargain.
Good luck.