My son is 5 months and 3 weeks old. We've been introducing solids for about 2-3 weeks now. (Very…

My son is 5 months and 3 weeks old. We've been introducing solids for about 2-3 weeks now. (Very little amounts) once a day. Bananas, pears, sweet peas, sweet potatoes etc. He is now getting used to swallowing and enjoys most of it. Problem is that he gets very gassy on most foods. Whenever I give solids, he'll be uncomfortable and gassy through the night. I still only give tiny amounts so I'm not over feeding at all. He's a happy baby and usually doesn't cry but some foods have him crying soon after. Any advice on what foods to give that won't hurt his little tummy so much?