Sleeping through the night

Hi, my 10mth old sleeps at about 6:30pm and wakes at about 7am. In between, he still wakes for another feed around 3-4am. Is this quite ‘normal’ and will he kinda grow out of this feed? If so, how do some of the mummies wean their child off? I’m just not sure if he’s not fed enough before sleeping or this is just part of his development. Am also mindful as he develops more teeth, that not cleaning his teeth after a feed will spoil them (he’s on formula). Thanks so much!