10 months old is a bit late for successfully introducing a dummy so you may need to preserver and work hard to get it accepted, if it will be accepted at all. Dummies are worth 10-times their weight in gold IMO.
You mention co-sleeping and I assume you are breastfeeding?. Are you planning on continuing to co-sleep just not to feed? That might actually be much harder to do and very difficult (impossible) for a 10 month old to understand that the milk-bar is right there, but they are not allowed access.
If you want to make the change from co-sleeping and breastfeeding to sleep to independent sleeping in own cot all night - you first need to be certain that this is a change you definitely want to make. It is a complete about-turn in parenting style away from attachment parenting. Do you really want to do this? If you do, make sure you are certain of your reasons and reaffirm them to yourself often so that you can stay strong and consistent.
Baby will find it hard. There will be crying. Probably a lot of crying, a very lot. Making changes to sleep habits at this age is hard anyway, making such a significant change harder still. So if you want to make this change then you would be best being consistent and strong.
Or alternatively, just embrace attachment parenting co-sleeping and night feeds as part of the baby years (it's likely to be years, set realistic expectations). But it won't last forever and when ready, your child will sleep independently when older.