It sounds like your plant is a candidate for a practice known as disbudding. That basically means removing some of the buds so the plant produces less flowers per stem and the weight does not affect the look of the plant. Here is a short note from the American Camellia Society on the subject: "Disbudding: Disbudding accomplishes two things: it concentrates the plant's energy on the development of fewer flowers, and it regulates the position of the blooms on the branch so that each may open unhindered. Some camellias have a tendency to concentrate their bud set on the terminals of the branches instead of distributing them fairly evenly. In some cases this results in a mass of buds at the end of the twig and necessitates drastic action. It is a fairly common mistake to start disbudding too early in the season, which simply results in another crop of buds. Disbudding may be practiced from September to November. A plant with fewer flower buds will have a tendency to produce later flowers."

Luis

Here is a link that might be useful: Disbudding Info from the ACS