It is a tricky one. I assume that you are baptized.
I know from serving as an elder that this sort of situation can leave the body of elders in a quandary. There are a number of angles they can look at. Do they see you as still part of the congregation but spiritually weak? Do outsiders consider you to be one of Jehovah's Witnesses? If the answer is no, then if the body of elders is easy going, you may get away with it.
There is no guarantee however that they won't poke there noses in. The Pay Attention book chapter unit 5A (the first one of those dealing with judicial matters) states;
So are you part of the flock? Listing the things that a judicial committee will look into, and hence disfellowship you for, it reads;
Apostasy.
Apostasy is a standing away from, a falling away, defection, rebellion, abandonment; it involves teaching false doctrines, supporting or promoting false religion and its holidays or interfaith activities. (Deut. 13:13, 15; Josh.22:22, ftn.; Acts 21:21, ftn.; 2 Cor. 6:14, 15, 17, 18; 2. John 7, 9, 10; Rev. 18:4)
Those with sincere doubts should be helped, dealt with mercifully. (Jude 22, 23; w82 9/1 pp. 20-1;w80 8/1 pp. 21-2)
Apostasy includes action taken against true worship of Jehovah or his established order among his dedicated people. (Jer. 17:13; 23:15; 28:15, 16; 2 Thess. 2:9, 10)
Persons who deliberately spread (stubbornly hold to and speak about) teachings contrary to Bible truth as taught by Jehovah's Witnesses are apostates.
If it is learned that a person has taken up association with another religious organization, the matter should be investigated, and if verified, a committee should be formed.
If it is clearly established that the person has joined another religion and intends to remain with it, the elders would make a brief announcement to the congregation that such one has disassociated himself. (w86 10/15 p. 31 )
Working secularly for a false religious organization could put one in a position similar to that of one preaching false doctrine. (2 Cor. 6:14-16)
Celebrating a false religious holiday would be similar to performing any other act of false worship. (Jer. 7:16-19)
I make it a point to attend no meeting and have little or no assocation with the congregation (not that they ever invite us anywhere now). My advice is stay low for a long time eventually they will forget you.