I usually find that after a period of time, my babies go back to sleeping longer without any prompting from me. Although i did try and resettle and cuddle rather than feed my DD1 at about 10 months when i was hoping she'd sleep though, it took a little bit of time, but i found it helped.
It is so hard to cuddle, rock, pat, sing or even get out of bed when you are exhausted though isn't it?

She'll go back to long sleeps soon.