Avoidant attachers- how to date….

So I believe I am seeing an avoidant attacher… I feel like I am an anxious attacher. I have been working to sit with texts not being answered immediately. I know he is busy and I know what’s going on. And I do not know why this stresses me out so, but he makes plans with me and sleeps over and always makes sure I get there at least once.. I guess the advice I want is how to be comfortable sitting and waiting…