Anal Sex!!!??? How to prepare??

So this is something I’ve been wanting to do for so long!! Me and my husband have tried it but it’s just so painful!! So I have a few but plugs I can always get them in with taking my time and using tushy tamer lol but I can’t seem to just let my husband fuck me anally it’s a super turn on for me the thought of it and I love the way the butt plugs feel I just want to know if I continue to just walk around/ sit with my butt plug in for a few hours a day will that help me to loosen up or nah? Help a girl out I’m trying to surprise him this weekend with being able to do it!!