Winding at 6 months bottle fed

 Hi all my little one is 6.5 months old and formula fed and has always struggled with wind since he was born. We used Infacol up until around 4/5ish months. So now we don't use it anymore but wind is still an issue as he will drink 3oz and need to burp before finishing the bottle. This can happen a couple of times before finishing a full 7oz. It can take s while for the wind to come up too.

i am growing really tired of feeding and winding as its taking so long now his bottles are bigger and feels like I'm just forever feeding and winding my baby and an be a real pain when going out for the day. Do you think I should have kept using Infacol? Or is there any more advice?

he is sitting up now but still doesn't seem to burp unless laying on belly which I obviously can't do when out and if I don't get a burp out then there will be milk brought back up at some pount

thank you