Ok, that's just not what's going on in Lev 23, or the OT. If this is what you feel you need to do though, by all means do it. Just don't require others to do it thinking that doing so meets some requirement in the Pentateuch.
What is going on in Lev 23 are the ANNUAL Feast Days...
Lev 23:5 In the fourteenth day of the first month at even is the LORD'S passover.
Lev 23:6 And on the fifteenth day of the same month is the feast of unleavened bread unto the LORD: seven days ye must eat unleavened bread.
Lev 23:7 In the first day ye shall have an holy convocation: ye shall do no servile work therein.
Lev 23:8 But ye shall offer an offering made by fire unto the LORD seven days: in the seventh day is an holy convocation: ye shall do no servile work therein.
Here we see the Passover and Days of Unleavened Bread. Passover is on the fourteenth of the first month. The Days of Unleavened Bread begin on the fifteenth and end on the twenty-first day of the month. These are not weekly Sabbaths, they occur only once a year.
Pentecost is counted from the weekly Sabbath contained in the Days of Unleavened Bread and only occurs once a year.
The Feast of Trumpets occurs once a year on the first day of the seventh month. Atonement occurs once a year...
Exo 30:10 And Aaron shall make an atonement upon the horns of it once in a year with the blood of the sin offering of atonements: once in the year shall he make atonement upon it throughout your generations: it is most holy unto the LORD.
on the tenth day of the seventh month.
The Feast of Tabernacles occurs once a year. The first day of the Feast is a high day (an annual Sabbath)...
Joh 19:31 The Jews therefore, because it was the preparation, that the bodies should not remain upon the cross on the sabbath day, (for that sabbath day was an high day,) besought Pilate that their legs might be broken, and that they might be taken away.
Here the high day referenced is the First Day of Unleavened Bread.
The eighth day, the Last Great Day...
Joh 7:37 In the last day, that great day of the feast, Jesus stood and cried, saying, If any man thirst, let him come unto me, and drink.
and is a separate Feast from the Feast of Tabernacles.
The annual Sabbaths are delineated in Lev 23. The actual Command for the weekly Sabbath is found here...
Exo 20:8 Remember the sabbath day, to keep it holy.
Exo 20:9 Six days shalt thou labour, and do all thy work:
Exo 20:10 But the seventh day is the sabbath of the LORD thy God: in it thou shalt not do any work, thou, nor thy son, nor thy daughter, thy manservant, nor thy maidservant, nor thy cattle, nor thy stranger that is within thy gates:
Exo 20:11 For in six days the LORD made heaven and earth, the sea, and all that in them is, and rested the seventh day: wherefore the LORD blessed the sabbath day, and hallowed it.