The first step to having a great day with your climbing partner is deciding what you want for yourself.
This is counterintuitive; it feels generous to be flexible:
“Whatever you want to do, I don’t really care what I climb today.”
But this puts the pressure on your partner to decide on a plan that serves both of you, with nothing but guesswork to go off of.
Like offering to cook dinner for an indecisive friend: you ask what they want, and get “I don’t care” for an answer. Not very helpful.
Your partner wants to support you in your goals. It’s his/her chance to hold up their end of the bargain, and trading roles and making compromises brings people closer.
First decide what you want, and then communicate it with your partner.
If you don’t know, you’d better resign to be along for the ride.