Is 3 months in Colombia, Peru and Bolivia too long?

I am planning to spend 3 months backpacking in those counties starting in August. However, I have previously visited Colmbia and Peru.

In Colombia I’ve been to Bogota, Guatape and Medellin for a 10 day period.

In Peru I spent 2 weeks doing Peru Hop from Lima to Cusco.

For my upcoming trip to Colombia I was planning to land in Cartegena and focus on the coast including Santa Marta and maybe Barranquilla for the beach vibes and then head south.

For Peru, I was interested in visiting Iquitos to possibly do Ayahusca. But other than that city I’m not sure where else to go.

I’ve never been to Bolivia before. So I was thinking about spending the majority of my time there and possibly book a flight to visit Patagonia. Any thoughts? I am trying to keep things as flexible as possible.

My main interests are hiking, scuba diving and anything adventurous