Well of course everyone’s situation is different. We have a PGCE student at school who started when her child was 17 months, not something that I would personally have done but it works for her. I have two kids aged 7 and nearly 10 and will start my SCITT in September, for me that feels like the right time. There were certain things I needed to do first for example GCSE maths and I wanted to gain more experience.
I think if you are wondering whether it would work for you this year then chances are it may be too soon for you.