Can you do cosmetic treatments such as HIFU or RF skin tightening, micro peels, Botox & fillers when you have cancer?

I was recently diagnosed with Colon Cancer and will be having surgery in the next 3-4 weeks - Chemo may happen but will not be until I am healed from surgery (approx 6-8 weeks) Can you continue to do cosmetic treatments during this time such as HIFU or RF skin tightening such as Fotona 4D, Botox and/or fillers? What about PRP for eyes? During this difficult time of life I would like to keep up with some approved treatments to ensure I feel and look my best while going through this battle.