tips on positions to control depth

my bf and I have a pretty great sex life overall, but we have a few hiccups when it comes to p in v sex. he’s pretty well endowed and his penis curves downward, but we have issues with me feeling pain when he’s all the way in. positions that are supposed to feel good for women whose partner has a downward curve like doggy are just downright painful for me. we’re able to slightly control the depth in missionary, but we don’t want to be limited to just one position especially because it’s harder for me to get off that way.

we’ve tried looking up any tips but any info is given by clueless men that think that just being big does the trick for women. anyone have any advice on why this might be happening or just some ways to alleviate it ?

thank you for reading! be well and stay safe <3