Good luck on your transfer and yes if at all possible have some down time. You will probably need it. Sometimes it is more emotionally draining than physically.
I had my transfer yesterday (my second with frozen embies). I would love to be able to lounge a bit.....but I have two kids and life just doesn't allow for me to take that break..lol...BUT if you can have some "bed rest" then take advantage of it, once the kids arrive down time is few and far between :)
Take care and good luck.
Is this your first ivf .. tom. you will need the best rest .. as for now distract yourself don't think about it