Sounds like there is still enough room in the brood nest for new brood - good that they haven't been fed to choking point. If you get the balance wrong, there is always the back-up plan of feeding fondant if they get light in winter/spring.
Icing sugar wouldn't be a bad idea - you need as much as to cover as many bees as possible, administered through a seive.
I'm hoping there are plenty of adult bees - these will be needed to keep the new brood warm - HM can only lay as much as there are bees to cover/feed etc.
However you do it, it looks like you'll have to keep a close eye on this lot. Fingers crossed it all pays off.
Icing sugar wouldn't be a bad idea - you need as much as to cover as many bees as possible, administered through a seive.
I'm hoping there are plenty of adult bees - these will be needed to keep the new brood warm - HM can only lay as much as there are bees to cover/feed etc.
However you do it, it looks like you'll have to keep a close eye on this lot. Fingers crossed it all pays off.