Positions to reduce pain?

I recently started seeing a new partner and he is rather well endowed 😅 does anyone have tips or positions that make it more comfortable/easier to have sex with a guy who has a larger girth than usual? 😅 (for reference I was only able to fit about 1/4 of it in before it felt like everything was too tight for him to go further)

I know lube and being turned on help (we did lube and LOTS of foreplay)