What's your bed time routine like? Does she fall asleep on you or on the breast and then you transfer her asleep or very drowsy? If so, she will need that to get back to sleep in the night. Here is what I suggest:
-bed time 4 hours after last nap (or, conversely, end the last nap 4 hours before bedtime) to build up enough sleepiness for bedtime
-a belly full of porridge before bedtime. This is to make her feel sleepy for bed
-do the final breastfeed and keep her awake, then do another one or two parts of the bedtime routine (song, story, teeth, whatever) so that there's a decent separation between feed and sleep
-See if you can put her awake in the cot all full, milked-up, and tired from being awake for 4 hours and soothe her off to sleep with back rubbing, bum jiggling, patting, something like that. Pick her up and cuddle if she gets upset. Be patient, this could take 45 mins, an hour... If it's much longer than that then I would hold her to sleep and then put her down and rub/pat/jiggle the rest of the way to sleep.
In the night, wait a few mins to see if the crying is really urgent sounding, or if she is just crying out while mostly asleep and will resettle herself.
This might take a while to work, as it doesn't involve a lot of force, you're really just kind of setting the scene and helping her to settle down to sleep in the cot at the start of the night so that this shapes the rest of the night.
If she cries in the night you go to her, if the crying is real hard crying. That means she is awake and she needs you. Otherwise, just give it a few minutes each time.
If you succeed with settling her off to sleep like this, try the same technique when she wakes in the night for at least one of the wakeups. Keep it very quiet, no talking or lights, just the rubbing/patting etc and shushing if you've been doing that. If it doesn't work right away, just feed as normal and keep trying for the rest of the wakeups.
Good luck, hang in there. This first year is one tough gig and sleep deprivation is a special sort of hell. Well done for getting through it so far, I really hope it improves.
As other posters have commented, this is a hard time for sleep anyway at the 8-10 month mark, so it could get a bit better on its own.