Baby won’t sleep, please help

My 6.5 month old wakes about every 2 hours. Once she did a 4 hour stretch but it’s rare.

She has silent reflux and we have placed her on the strongest med the ped will allow.

I have also cut dairy, chocolate, caffeine and gassy veggies from my diet.

She wakes after 20 mins of napping and refuses to go back down,

Does a little better if being held.

Can anyone help me get her to sleep? It’s been going on for 4.5 months now and my husband and I are losing our minds! We need sleep!!