Feel like were getting no where

We have had Jojo for about 6 months now, he is settled in his cage well & has started playing with toys.

We can go in his cage to change food/water and he wont move off his swing.

We have started sitting next to his treat bowl & adding treats to try and get him to take them whilst we are next to his cage.

We are also sitting next to his cage with food on our hands for him to come & get some.

Is there anything else we should be doing?

I understand this is going to take a while, it just feels like we are doing this for weeks on end & getting no where.