Hi OP,
I’m not a grandma, but I am a Mum who has had to have similar conversations, so I hope you don’t mind me responding too.
I often find that requests for alone time, when the children are so young, aren’t to meet the child’s needs at all, but to meet the requesters needs; whether that’s to act as primary caregiver, to prove a point, or to make it feel as though they are helping.
Unless there is something seriously dysfunctional within the child’s parental home, when they’re under a certain age, the child (or children) really does just need their parents.
Please forgive me if I’m wrong, but from your post, it sounds as though you’ve had some unsolicited advice (or blatant voice disagreements) which has been the opposite of the way you parent?
If that is what’s happened, you have my sympathy; I’ve had similar and can say it made me feel like I was under utter scrutiny. It also made me feel like they didn’t realise I was a grown up, who was making my own choices, that I made with the best interests of my children at heart - instead, it made me feel like they thought they knew better and they disregarded my place as a parent.
We have been told that we’re not providing the right grandparent experience - but too be blunt, I didn’t have children to enable the various parents’ to have grandparent experiences.
These voiced disagreements and bits of unsolicited and opposite advice make me more reluctant to facilitate alone time because I know our preferences won’t be adhered too - there’s a lack of respect.
I think that comes from the dynamic and relationship change, from being a parent of an AC and feeling like you can advise to being a parent of an AC and respecting their wishes as a parent.
With regards to your questions, I think, firstly, there’s an absolute positive that you want to carve out a good relationship still.
Longer term, those grandparent relationships are important (maybe just not from such a young age and during alone time!)
I think starting the conversation with what you all hope to get out of it, and that nothing said is intended to upset anyone is a good place to start. Being honest about why alone time and someone else doing caregiving tasks, doesn’t work for you is key.
Have the conversation with your DH in advance, and make sure you’re both on the same page about what you are comfortable discussing and what you’re not.
Remember that, as intrusive at they seem, their requests are coming from a loving place, but that also your children and your family unit are your priority - so only agree to things that your family unit are comfortable with.
Best wishes.