Can you get orthognathic surgery after bariatric surgery?

Hi, I’m looking to have Bariatric surgery for my weight and pain related to it. But I also eventually want to have orthognathic surgery to fix my bite. Both impact my life negatively. Unfortunately, I’d have to do Bariatric first, as I’m saving up for jaw surgery since my insurance doesn’t cover it. Is weight loss surgery a contraindication for orthognathic surgery due to the potential for calcium deficiency? Even if a person remains militant about vitamin intake? Both would change my life