Why waiting 12 months and not change now if that is what you want ?
If you wait because you have a paid license, simply turn of the ads.
If you look around you will see that others that offer about the same protection as avast does, also cost about the same and
e.g.
Kaspersky, 3 systems, one year = $79,95
Bitdefener, 5 systems, one year = $62,00 (has less security then e.g. Kaspersky and avast)
Eset, 1 system one year = $79,99 (has less security then e.g. Kaspersky and avast
etc.