If you can get her to take a little every couple of hours, she'll get plenty for the first day or two. You've done the most important thing, which is the 100ml of colostrum promptly.
If you're worried about her getting too much, it's better to limit her to 50ml every couple of hours (she'll be fine for 6-7 hours overnight if she's been feeding regularly throughout the day
) than to feed her less frequently, just for the first 24-48 hours while she's so weak.
Hopefully she'll start feeding off mum as she gets stronger, and will take less from you.