how can i make my boyfriend feel more useful?

hello! so to start off i’m (23F) a very independent person. i am the first born, the oldest daughter of an immigrant family with mentally and chronically ill members. not only am i very good at taking of others, i’m very good at taking care of myself by myself. asking for help is something i struggle with and only when all else has failed and even that is new to me. i don’t say that to make it sound harsh or like i had a bad childhood. i say this because i’m in my first serious relationship with a man i love very much, and with that i love taking care of him (35M), but hes expressed to me that he would like to do the same for me and i dont know what i could do to make him feel that he is as much my rock as i am his.

for example my boyfriend struggles with eczema flare ups and i’ve been making a point of carrying more things on my person for this. i dont mind this at all, i’ve got a bigger bag for it now. i even purchased him a nice but slightly larger crossbody than the one he currently uses so he can carry those products on him when i’m not around.

he says i take care of him but he’s worried no one is filling my cup. he wants to know what he can do to take better care of me..but honestly i don’t know. he asked me if there were things he could carry for me, but aside from my lip products, prescription medication, my keys and wallet, everything i carry on me is mostly for him or products we both use. i could give him the bug spray i walk around with since i am the one who always gets bitten. maybe tampons? i’m not sure if thats odd, i’ve never asked a man to carry sanitary products for me before. i feel like thats something i want to keep close to me for emergencies and having him carry it would defeat that purpose.. i dont know.

i am also someone who goes out of my way to open doors and carry things for other people. i am used to being the stronger and more abled body in the room, sometimes i forget he can open the door for me and that doesn’t mean he’s calling me weak. sometimes we bicker because he insists of wearing my bag for me or carrying both our bottles. i am “letting” him bring me water through out the day and open bottles and can lids for me, under the guise that i cannot do these things because they are too tight or my nails are too long. this he did express to me he likes. however i’m actually a pretty strong person who regularly lifts heavy items for work all day and have yet to meet a jar i could not open myself lol. i also feel odd about having him pay for things– as in i dont want that to be the way he takes care of me. we dont usually split the check but i will cover a date and he will cover another. i dont keep track but i make sure to do it often enough, especially since i make a bit more than he does and he is almost always picking me up as i do not drive.

what else am i supposed to “let” him do to make him feel like he’s supporting me? he does support me, maybe i don’t tell him enough as he’s doing it. i don’t see it as transactional. i know acts of service is a big thing for him, bigger for him than it is for me. i guess i didn’t think that also meant he wants to be of service at times too.

any tips would be greatly appropriated 🙂

TLDR, what can i allow my very sweet boyfriend to do for me as a highly independent person to make him feel that he is useful and supporting me as much as i support him? i feel fine with how things are, however he clearly feels that i do much more for him and it worries him a little.