I CANT DO IT! Need help!!!! Please!

I am 11 weeks pregnant with my second baby and have EBF my 6 month old since he was born but my doctor told me I needed to start weaning him two weeks ago (due to bad cramping) and should’ve been all done by this past Tuesday (3/20) but no matter what I do my son will not drink formula!!! He drinks water just fine from a bottle but he refuses to drink formula!!! I don’t know what to do, at this point I don’t even want to breastfeed my second baby and I feel so mean even thinking that but it’s been horrible trying to wean him! I hate everything about breastfeeding now that I’m trying to wean him and since he got his two bottom teeth (at 3 months) it didn’t bother me as much as it does now that my nipples are extremely soar due to being pregnant! I don’t know what to do!!!! I just want to stop BF already!!! Help!!!!!