Pumping question

I haven’t lost my milk yet but I’m pretty much pumping every couple days now my little one has a milk allergy & soy allergy along with really bad colic so me eating any kind of thing that gives me the littlest bit of gas kills him for days so I hate giving him my milk i am still leaving out dairy unless it’s hidden an I don’t know about it but I just now decided that I want to pump to an save my milk for when his body can handle it a lot better down the road right now I’m making about 2-3 oz every 2-3 days is there anyway I can up my supply to where I can pump all the time like I said I haven’t lost my milk yet I’ve heard once you lose it it’s gone forever can anyone help me with this should I start pumping every couple hours would that even help ? Or should I just give up my new plan