Can you go back to wearing your faja a year after liposuction?

Photos both before and after surgery would help more accurately answer your question. If there is little difference post abdominal liposuction, either:
1. Not enough fat was taken
2. Post-op weight gain may be to blame
3. You were not a good candidate for the initial liposuction

Wearing compression garment May give you temporary reduction in the amount of fluid in your tissues but will not change your results.
Compression garments do not change final liposuction results which are purely determined by each individual patient candidacy for the procedure combined with the skillet experience of the surgeon.
Patience would like seeing quality results after liposuction should definitely take a look at their weight history and check their weight compared to what I was at the time of surgery.
It’s not uncommon for people to gain weight after liposuction which will definitely lessen the results.
Without showing proper before and after pictures we really can’t make an assessment on the outcome of your procedure.
You can wear your compression garment if you like but it will not change your Liposuction results.
Best,
Mats Hagstrom MD