There are really no non-surgical treatments that affectively tighten skin in my opinion.
Repeated micro needling, probably comes the closest.
Radio, frequency treatments can cause loss of subcutaneous fat and this can cause secondary skin laxity issues.
I suggest you discontinue with the...
Typically this would be up to your surgeon and when they believe you are ready to be released for other treatments. I advise my patients to wait 3 months post liposuction.