Advice on helping my 2yo settle into nursery

[Nightnight23]

Just turned 2 yo DS is starting nursery in sept - 2 mornings a week. Can anyone give me some tips of how to help him settle? I feel both excited and nervous for him.

Be firm and cheerful. If you feel anxious, he might pick up on it. Go into the room with him, give him a kiss and tell him you’ll be back at x time (after lunch etc) then leave. I work in a nursery and find that children whose parents tend to hover for a while take longer to settle in. It’s hard leaving them for the first time, especially if they cry, but I’ve never had a child who didn’t settle eventually.

The nursery have asked me to do induction days with him where I basically stay there until he's settled. He's not a particularly clingy child but then I haven't actually left him with anyone other than my mum.
I'm a bit confused about the induction though - should I take a step back and sit on the sidelines - if so, what if I see him doing something that I would usually reprimand e.g snatching a toy etc (inevitable). Do I do what I would usually do (stop what he's doing, explain why it's not nice and get him to give toy back) or do I leave it to the nursery teachers as it's in their territory?
I'm hoping to not do too many induction sessions as I think he needs to understand it's a mummy free zone but equally I feel sick at the thought of the first time he looks around for me and I'm not there.
He's such an inquisitive little boy, I think he'll really enjoy nursery but part of me feels like I'm abandoning him. (Which I know is irrational - it's only 2 mornings a week!)
When I've left him with my mum, I do a smiley 'mummy's off now, I'll see you later' kiss, then prompt departure and he always waves me off with a big smile as he knows he'll be having lots of fun with Grandma, so I'm planning to replicate that.