Needing advice here!

Nobody warns you about it. Then it comes so quickly. Without a manual. Not talking about a baby. Talking about the sibling art (or major lack thereof) of sharing. Aha! Those with two or more children are well aware of this topic. I, however, didn't quite prepare or think about it until recently, when Baby Bee naturally progressed into the state of mobility, followed by the recent gifting of a slightly used train table from some very gracious grand & great-grandparents (thank you, thank you!).

Kid Mock turned into an overprotective Crazy-head.

One would think Baby had a machete in one hand and a fork in the other the way Kid would scream at his approaching.

Why is this a difficult progression?

So, now, I invest. Minutes of time sitting on the floor, assuring that each child gets adequate training in sharing, as well as their "two minutes"... this is what I'm not good at. I like staying busy, dusting this, washing that. Sitting on the floor is not productive (okay, well it is now as I'm attempting to share-train).

I need your help. Our strategy is not quite nailed together, in fact, the building process has just started.

Do you have siblings share everything, certain toys?

As of right now, the boys are to share everything (as in taking turns or playing together), but in their solo time they are allowed to play in their own room with their own toys. I haven't yet decided if I want them to have the option to play in their own room whenever they would like (well, mostly Kid at this stage), as I feel like this has potential to leave out the other sibling in the future.

Please share any ideas, philosophies, creative ways at making both kids happy without feeling like they have too much ownership over anything. Or just share what you do or plan to do with your children. Thanks!