What can I do to prevent sleep disasters with DS going into childcare this week

[Jellybabie3]

12.5mo here. Not the best sleeper really but anticipating a rough few weeks with him going into childcare

Current routine:

Wakes 5.30am bf and brought into our bed.
8am wakes for day
10.30am nap approx 1hr 15
3pm nap approx 45min tops
7.30pm bf and bed

Wakes approx 1-2x in night requiring a cuddle.

My concerns are i spent a lifetime getting him to nap in his cot. He sleeps there reliably now albeit held to very very near asleep. He will sleep in the buggy when very tired and the car. But the childminder is anticipating he will just drop and sleep. . He's had 5 settling in sessions so far 8am til 12 or 2pm and didnt sleep at all.

I will need to drop him off at 7.15am so will already be on the back foot.

In my experience, ds settled differently for nursery staff.

At home he would self settle and only nap in the cot. We always used a gro bag. 2 hours from 12:30-2:30.

When he started nursery I gave them a gro bag. He refused a nap completely and would drop off when absolutely exhausted. If he did nap it would only be for 45 mins. He wouldn't self settle and they resorted to rubbing his head / patting him. After a month or so he started napping for longer. After a
Couple of months they moved him out the cot and onto the mattress. They then swapped the gro bag for a blanket as apparently he wanted to copy the other kids.

He will nap for 2 hours there now unless there is noise he may wake up earlier but can cope a lot better as he is that bit older.

What we did find is that he suffered separation anxiety when he was settling in at nursery and so he needed some comfort and reassurance at bedtime with us at home so we had to work on getting him to self settle again.

Hope that helps!

OK thanks. His separation anxiety has definately ramped up since doing settling in so I expect it to be hairy