Are these grafts too big/too many? (Photos)

I'd concentrate on what you don't like about your nose, whether or not the problems were generated from grafts. There are a lot of people with big problems after primary rhinoplasty who had *no* grafts, but they still need a skillful revision.
The revision surgeon won't just be removing the grafts. He'll be trying to change your nose to its original goal, whether that's by removing/modifying the grafts, or changing your natural cartilages and bone.
As you unfortunately know, rhinoplasty is an exquisitely difficult operation to get right, and you should only have surgery if you are able to make yourself very confident in your surgeon's skills. Any revision requires advanced techniques, requiring skill that most plastic surgeons don't possess with expertise. For most noses, it's much better to not have surgery than to have inexpertly-performed surgery. Read my essay on how to stay out of trouble while selecting a rhinoplasty surgeon, and how to tell whether your first surgeon should be performing your revision.
Your nose is also a perfect example of why computer imaging is mandatory in rhinoplasty. You need to know exactly what the surgeon is planning to accomplish -- what features he thinks he can change, and by how much he thinks he can change them. I always email morphs to my online rhinoplasty consultations. When you see the surgeon's goals in the morphs, you'll know whether he has an eye for an attractive nose, and whether he shares your opinion of what constitutes an attractive nose. You'll also know whether the changes he proposes are large enough to be meaningful to you, and whether he understands your wishes enough to address all of your priorities. How would you ever get that figured out without the morphs?! 
But remember, you're not the surgeon for his skills with the computer. The doctor must then show you his before and after photos to prove that he can actually accomplish what he draws on the computer.

Nasal grafts are often used to reshape or support the nose, and most of the time you cannot see them or know they are present. Used correctly, they generally don't make the nose bigger. It is important to see a surgeon who specializes in rhinoplasty as well as revisions in order to determine what can be done to improve the appearance. 

Hello, thank you for question and provided photos.Graft materials usually used for supporting, reshaping the nose and they will not make the nose look bigger, they are used when needed to create balance. Since you are in your healing phase now you have edema and swelling that can make your nose uneven. You need to complete your healing phase, then if the final shape is unsatisfying you can have a revision rhinoplasty to improve your nose. You need to seek an exprienced professional Surgeon.Best Regards,

Spreader grafts are commonly used and yours are of a standard size.    They will slightly widen the nose but only slightly.  However, in primary rhinoplasty I infrequently find them to be necessary.  They may or may not be contributing to some of the issues you have with your nose.    A columella strut is used in every orient to give predictable tip projection and does not contribute to bulk.  However, you need to wait a full year for a revision and your nose may very well improve in the meantime.  It is certainly reasonable to get another opinion.

We use CStruts and spreader grafts regularly, when necessary, and these may not be causing your concerns about your nose. When you consult with another rhinoplasty specialist, your operative report and preoperative photos may be helpful for determining what might be best for you moving forward. Wishing you well. Dr Joseph

The spreader/columellar strut grafting that you have had is primarily for structure and straighting...although these grafts do not typically add a lot of bulk to the nose, they can become scarred and warp leaving you feeling amorphous and crooked... 6 months out is enough to tell a lot, but it may still be a bit early for a revision.... MOST importantly, don’t rush into it... make sure you visit at least a few experts... these surgeons can be from an ENT or plastic surgery background and should have been in practice for a while; have a practice focused on rhinoplasty and have a predilection for revisionsGood luck