I personally would, if in your shoes, try it. Go back 2 days a week, if you like it and want to do 3 you can, if not and you really cannot cope with it/dislike being there, you can stop work. And in the meantime you will be earning a little.
I work 3.5 days per week, and have done since DD was 1 year old (was meant to return when she was 6 months but for various reasons did not). I think at 6 months it would have been harder to do, but at 1 year it was fine.
She is 2.4 now, and she spends 2 days at nursery, 1.5s day with daddy and 1.5 days with me. To be honest she loves nursery and I think it is better for her to spend 2 days there rather than all week with me.
I would like to perhaps be able to drop to 2.5-3 days. But, I would certainly not want to NOT work, as it gives me a chance to be me, not mum for a while, and that makes me a better mum.
I recall very clearly though, panicking while on maternity leave about having to leave DD, how bad a mum I would be, that I would want to be at home with her afterall. I had many many sleepless nights as my time to return drew near and many tears.
But, returning for me was the right thing to do, and it might be for you.
Good luck