Just another dilemma - WWYD?

[EncoreChangezLeNom]

My situation: live abroad with husband and children. Have for a few years. Job is stable, well paid but less than other organizations is same country. Am fulfilled in job though, feel valued and needed. Work far too hard. Husband and kids happy and fine here.
Country has done well with covid so far but facing a new lockdown situation.

Parent in uk very unwell. All care has fallen to one sibling. This really isn't fair. Parent generally is better with more support nearby - covid has not helped at all.

Personally, I would like to return to UK. I think it would be better for the kids for various reasons. However, would mean both husband and I giving up jobs and facing lots of uncertainty.

But I really miss my friends, family, way of life. I want to help my parent and make it easier for my sibling. I know it would be really hard. But is it irresponsible to walk away from 2 good jobs into UK uncertainty?

Help me rationalize please.

Forgot to mention, borders here are closed. Haven't been home for almost 2 years and return or any other travel within the next 12 months is looking very unlikely.

What a difficult situation. There are things you could do remotely such as take on any financial or admin issues and maybe pay for a cleaner or gardener- whatever is needed.

When you are able to travel could you ask for a work sabbatical? It would give you time and space to assess what your parents need and work out what you really want to do. Are there jobs in the UK that you could realistically get?

Stay out but help your sibling financially if possible?

Finance and admin sadly won't help. It's a serious mental health issue that only pestering the woefully inadequate services and being there in person can help.
Sabbatical wouldn't happen in my line of work, but regardless, it's really unlikely to be less than a year away, so of no real help right now.
Thanks though.