It would be helpful to know their actual weights rather than just a qualification of the weight. In other words, keep track of their weights with scale. The reason is to better understand if the snakes are healthy enough to go into hibernation. So, admittedly, it's a little late for that now. But if you feel that their weight are still in a "normal" or "healthy" range, go ahead and hibernate them. My opinion is that if they aren't regular feeders, you should skip the breeding intention until you can get them under a more normal schedule. If they come out of hibernation with a strong appetite, you certainly could consider breeding them. Good luck!
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Virginia Herping
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"The irrational fear of snakes is the only excuse a grown man has... to act like a complete sissy" - Colchicine