Ready to give up 😞

My LO is 3 months old. I’ve been exclusively breastfeeding since day one, and it’s hard. I’ve fed a bottle here or there with milk I’ve pumped because I just get so tired of having him on my boob all the time. I’m leaning towards pumping more and giving him bottles because I’m just getting tired. But I feel guilty :( I’m on the fence because I feel selfish if I do... I don’t know what to do 😩