Have you tried sweet potatoes? We did fruits first... Yellow foods (pear apple banana), the orange foods (sweet potatoes, peaches, carrots), then green (avocado, green beans... good luck with those beans), then red/purples (plums). My daughter really like sweet potatoes, so after I introduced that, I would do a combo scoop, like a little sweet potato with a little carrot. Did combo scoops with banana and something else also. Also, the consistency of bananas and sweet potatoes was easier for her young tongue to swallow.
Honestly, I didn't do meat at 6.5 months. That strikes me as too early. My daughter was getting her protein from breast milk and/or formula at 6.5 months. In fact, I am pretty sure we were still introducing all the various cereals between 6-7 months, plus the yellow and orange foods. I think she was much older when we tried meat. But I introduced every new foods very very slowly. One new food took at least 2 weeks of observation before introducing the next. That helped narrow down the cause of any food reaction if you know exactly what the culprit is. I also introduced scrambled microwaved egg yolk with a splash of formula (not egg whites) with melted cheese for a protein source when she was closer to 11 months. Rolled them into little balls and she loved them.