I have a great looking SB sorority girl, perfect in every way.  We get together and she only likes to sing orally.  Hey I’m good with it.  
She’s been texting me lately to meet up more as she’s been pretty hit and miss for the last 6 months.  Lady week I couldn’t get time but I helped her out.  We planned on the s week to make up.  
Yesterday She asked for more help so I said sure but I’d want a little more from her.  To go to the next step in our fun, she told me no sex, so I’m meeting with my #1 today and not her. Did I ask for too much?

You don't get something for nothing.

The rules because if you gave in this time then she would expect the same treatment again. I would recommend trying to see her again if you like her oral but for me if there was no sex then she would be forgotten.

Every one has boundaries. Hers is oral only/no intercourse. Yours is xx for oral and xxx+ for intercourse.  
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This is common in the sugar bowl and like in any sexual situation, we must all respect that no means no.  But she can move the "no" slider to the left or right as she chooses, as can you.  
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I have more than once been in a situation where a SB asks me for something I won't do under the current arrangement.  When I've said "no" I've seen a variety of reactions from full acceptance to tantrums and threats to leave. Sometimes she will try to negotiate a compromise and although I'm usually willing to have that conversation, I still won't be moved beyond my limits. (At least not now, as I have learned some lessons the very hard and expensive way!)
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Here's what I usually find after refusing to cross my limits: she caves. And once she does I am in position to either welcome her back, or actually modify our original arrangement in my favor.  For example, I had a SB who, like yours was "hit and miss" for about 6 months. Add to that that she had originally negotiated hard for about 25% more sugar than I usually offer.  I stopped messaging her and waited until she asked for a new meeting. When she did, I slow rolled my reply over 3 days and got her scheduled two weeks out.  Note I wasn't a dick, I was just "busy, but really wanted to see her".  When we agreed on a date and time, she asked how much I could "help" her. I replied with "I can help you with "xx". Note that "xx" was abut 25% less than original arrangement. She immediately accepted - no complaints.  
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What I took from that exchange was that either she was willing to take less rather than losing all sugar, or she was seeing so many SB's that she just forgot what we had previously agreed to, or maybe both.  
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My point is that you will ALWAYS have the power to say no (as does she). But you can always add new SB's to your rotation, so if she self-removes herself from your schedule, you just move on. My sense is that most SB's don't want to work as hard to find a replacement SD as we do to find a replacement SB.  In my case, and the case of many others here, replaceing a SB is as easy as calling up one of your minor league B-team SB's and asking her to fuck your brains out. But even if you live in Pussy Siberia, as far as SHE is concerned, you are always busy, always have multiple SB's available (you can define "available" any way you want), and you are never desparate to keep an SB (especially one who tries to push you past your boundary).

I agree with Herb's comments entirely. But sometimes it's hard to follow even the best advice. I've got a little honey on the line right now who is pushing me real hard to go waaaaay out on a financial limb for her.  I don't need this shit! And I've made the same expensive mistakes in the past and promised myself I'd never do it again. Plus my rotation is already full of gorgeous sexy young women. Still, she's a hottie and it's a struggle to stay strong and keep the big head in charge!

My little number 2 has turned into a birdie.  She is now a “swallow” and promised 2 opportunities when together.  I have yet to answer.