I have lymphedema in my mouth, throat and neck following tongue cancer surgery. I use a lymphedema pump made by Tactile Medical. It uses a mask and vest and air pressure to massage the skin. My treatments take 33 min.once a day. My surgeon prescribed it and my insurance paid for it. See their info here. https://tactilemedical.com/
Good luck to you. I see Amazon has other options similar to mine for much less $$.