Any advise for first time daycare

So ive been home since giving birth with my boys. (13months apart)

We have decided to send them to daycare so i can go back to school or work. But first i want to see if they will be okay they have been with me 24:7!!!!

Sooo any tip / advice?

This daycare has Saturdays available so im going to start Saturday and once a week.

And my 1 year old is still breastfeeding but does drink milk in a cup once in a blue moon maybe he will officially wean off?

Im sad and feel guilty of signing them up😭😭😭🤦🏻‍♀️

But we all need this change.