she was climbing out the cot so I felt I had to do something
The behaviour you are having to deal with now is exactly the same unwelcome behaviour as cot climbing was. So you didn't actually solve the problem moving to a bed, just moved it into a different setting.
It's probably too late now anyway, but if this was my child I'd go back to a cot and do the gradual withdrawal or rapid return (which would be rapid lying back down) from there. But that's me and you aren't me, so...
'll try the gradual withdrawal. Any tips?
Remove that mattress and stop lying down in there. Sitting on the bed is ok, but it is establishing that you are staying for going to sleep, not all night.
Then offer every bit of comfort and reassurance that child needs, in any way, staying and being calm and patient throughout. Stay right throygh until asleep, never withdrawing until asleeo. Do this for about a week, to establish that you'll always stay until asleep, always give as much reassurance in any way you can, won't be lying down.
Then start very slowly withdrawing how much reassurance she needs.
Say you start with your hand on her chest/back/side patting constantly until asleep. Shushing if distressed, cuddlibg down to get if needed. Wait until asleep and sneek out.
Then start the patting until settled, but still your hand (leaving it there) when calm. Patting if extra reassurance needed, just hand on chest/back when calm. Sit on bed, wait until asleep.
Kneel next to bed instead of sat on bed. Pat to settle, hand on chest/back constantly when calm. Wait until asleep.
Kneel next to bed, pat to settle initially. Then firm hand only, remove hand when calm. Hand back on chest/back if needed, withdrawn when calm
Hand on chest/back to settle. Hands off and kneel by bed when calm.
Hand on chest/back to settle. Hands off and stand by bed when calm. Bend and hand on when distressed, stand when calm. Wait until asleep.
Hand on chest/back to settle. Hands off and step away from bed when calm. Back to hand on chest/back when distressed, stand and steo away when calm. Wait until asleep.
Hand on chest/back to settle. Wait by door when calm. Back in with hands-on when distressed, withdraw to door when calm. Wait until asleep.
Settle in bed. Leabe door open and busy yourself upstairs until asleep. Back in with in when distressed, always withdraw when calm.
Settle, leave, close door. Stand and listen at door. Any sound at all go back in, it's just to test you'll still come immediately even with door closed. Show that you will.
Settle, leave, close door, listen to monitor and respond quickly if needed.