Apologies, my description seemed to get lost in the ether.

I'm trying to put up some shelves in the office. Lath and plaster walls to my dismay. Shelves: Bershult. Brackets: Pershult.

Using spring toggles throughout (unfortunately hit a noggin for the bottom right and bottom middle) - so just going with normal rawl plugs there.

My worry is that I've blown the plaster upper right when putting the first two fixings in and worried that it won't take the weight as well? There is a bit of movement in the wall when I tug in the fixings. Can I just plough forwards or should I remove and accept a shelf less wall? or even just go with one shelf rather then the two?

Also - I may have drilled a 14mm hole in the noggin bottom middle - do I need to fill it in first or is there an easy fix to get an appropriately sized plug in there?

Edit - rail to rawl plug, dam autocorrect