Drifting apart in relationship

We've been together for about two years and are getting married in a few months, i guess with the stress of everything we've sorta drifted like we aren't as romantic as we used to be and spend most of our time wedding planning or watching tv because we both work full time and dont have much time to rest so by the weekend we are exhausted. Im a very closed off and independent person, and i didnt grow up in an affectionate household so pda is very hard for me. Recently much harder recently. I live at home still so we dont have much time alone and have decided not to have sex before marriage so that may add to the frustration, but anyways we just dont seem as connexted lately and i dont feel as atteacted to him n were both working to get back on track physically because we have gained some relationship weight lol I just dont know what to do about this lull. Have you ladies been through this before? He's absolutely my best friend and I could never imagine being with anyone else, and i love him more than anything, i just dont know how to open up and reconnect. Advice?