To put DS in nursery on a days when me and dp are home

[Abbinob]

Ds goes to nursery in the mornings at, 9-12. Free 15 hours 2 year old thing
Me and dp both work ut we work on different days, he's does 4 and I do 3. If we have to both work the weekend my mum has ds. I've o ly been working a few months.
Wibu to put DS in a different nursery for 2 days from 9-3 (his only does mornings) so we have a chance to catch up on stuff?
We could get tax credits towards this but I'm having a bit of a dilemma as to whether that's an ok thing to do or not? We don't NEED the childcare as me dp work shifts around eachother but at the moment I'm really struggling with keeping on top of everything at home and getting mega stressed out.
I'm a bit weary of getting stressed out because last year I had some kind of breakdown thing that was awful and went on for months (psychotic depression + OCD seems the most likely explanation but I haven't yet been back to gp since the first time )
I notice the OCD stuff gets a lot worse the more stressed I get so a day a week to do stuff would be a massive help (dp would have the other day)
Is that OK? Or morally not really to claim tax credits for childcare you don't NEED

Sorry but I think it's hard to expect your child to adapt to 2 desperate childcare settings so you can use a full day more effectively. 3 hours childcare, allowing for drop off is not great, 9 til 3 is only 6 hours and trust me is as restrictive. You need to look at whether the current childcare providers are providing the support your family needs.

Well then he could go to just the one, I did say we hadn't worked out what we were doing yet, i just feel a bit guilty taking out of his nursery necause he loves it, its rwally small and locely (7 kidsish, 3 staff) Could also do days longer than 9-3 just haven't worked out all that stuff yet