I actually think there is a lot of unhelpful and irrelevant advice so far - the OP has said her dc is 1yo, therefore weaning to formula is ridiculous when she’s bf for 12 months so far and advising in weaning your dc at 6 months isn’t really going to help the OP.
I reckon you have 2 issues to tackle and they’re separate and require separate interventions but can be linked - milk and sleep.
Milk
You need to decide if you want to continue BF as you have 3 options: either wean, reduce ( stop milk at night) or stop completely.
Whilst the WHO recommends bf for 2 years, stopping bf at 12 months is fairly common, especially if DC are on a healthy diet of solid foods.
Some use follow on milk (personally this is a con) others give cows milk or non dairy milk. Your choice.
The option of weaning can be started by night weaning. This gives the option to then wean completely, or just stick to feeding during the day (which I have experience of, also with a velcro baby, and ended up still feeding until 2.3yr)
I have experience of night weaning following the Dr Jay Gordon method. It is a very gentle weaning method which had great results. We instantly also saw a change in DC food intake (which was good anyway but she notched it up when she wasn’t getting milk during the night). This all then linked to her routine during the day and me constantly offering more food to her; which then linked to her sleep.....
Sleep
As others have said, it’ll be dependent on your daily routine now.
Structure, fresh air, play time, naps etc are all helpful. There are tons of methods which you need to have a look into to decide what would work best for you.
The structure then supports the evening routine.
I bf’d to sleep but from around 12 months, DH became “in charge” of putting to bed. She’d be fed downstairs, then go up with DH who’s do a combination of bath, funny stories, cold milk in an open or sippy cup, cuddles and music. If she requested bf I would go up, feed for 15 seconds and tell her it had all gone until the morning. DH would then offer cold milk and cuddles.
This is only my experience but it was mainly successful - of course teething / illness etc would throw it out. But she became more and more used to DH putting to bed and less reliant on me doing that, which also helped with milk reliance and our thing, as someone else said, was no milk between certain times (9-6)
At around 13 months, we also changed the cot to a cot bed. Instant difference. We thought it was too young but it recommended to us, and definitely made a huge difference to her sleep.
Hope all of this helps
Sleep deprivation is awful and I completely understand your reasons for leaving baby. I think there are definitely other more gentle ways to help her routine.